LINE BITMAX Help Center

Important announcements
Basic use

Account

You can log in to LINE BITMAX from the LINE smartphone app. To use the service, just go to the Wallet tab and tap the LINE BITMAX icon.

You can also log in to LINE BITMAX by tapping here.

Note: Make sure to access the link above on your smartphone with the LINE app installed while logged in to your LINE account.

If it's your first time using LINE BITMAX, see this Help article for the steps to sign up for an account.

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The LINE BITMAX service is linked to LINE, so you need to make a LINE account before you can use it.

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LINE BITMAX can only be used from the LINE smartphone app. It cannot be used with LINE for PC or iPad.

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• Changing your phone number or email address
Your phone number and email address are linked to your registered information on LINE. Please change the information registered to your LINE account.

For the steps to change your phone number or email address, see the following Help articles.

Checking/changing your phone number
Registering/checking/changing your email address and password

• Changing your name or address
See to the following Help article, then change your information.

Updating your registered personal information

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LINE BITMAX is linked to LINE, so you can continue using it on your new device after transferring your LINE account.

For information on how to transfer your LINE account, see the following Help content.

Information on transferring LINE accounts and resolving transfer issues

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You can delete your LINE BITMAX account by tapping the More tab on the main menu > Manage account > Delete LINE BITMAX account.
Note: Your trade history and balance cannot be restored once your LINE BITMAX account has been deleted.

You cannot delete your LINE BITMAX account if:
• You have crypto assets available to trade or send.
• Your balance of Japanese yen exceeds the withdrawal fee.
• You have any pending transactions.

If you can't delete your LINE BITMAX account, try doing so after selling your crypto assets, sending them to another wallet, or withdrawing your Japanese yen.

Also, if you have Japanese yen in your margin account, please transfer the funds to your spot account via inter-account transfer beforehand.

See also:
Minimum crypto asset amounts that can be sent
Trading units for buying/selling crypto assets
Selling crypto assets
Sending crypto assets to wallets outside of LINE BITMAX
Withdrawing money (JPY)
I can't delete my LINE BITMAX account

Contact us:
Send us an email at any time via this Inquiry Form.

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When you delete your LINE BITMAX account, all of your account information is deleted along with it, including your previous trading history and remaining balances. Once account information has been deleted, there is no way to recover it.

If your old account was deleted, please consider using LINE BITMAX with a new account.

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If your smartphone is lost or stolen and you want to deactivate your LINE BITMAX account, please contact us at any time via this Inquiry Form.

Note: We do not currently offer chat support with an operator.

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If you think your LINE account was stolen, please contact us via this Inquiry Form.

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LINE BITMAX is linked to LINE, so first make sure you can use your LINE account.

Note: You cannot use LINE BITMAX if you don't have a Japanese phone number. See Conditions for using LINE BITMAX for details.

If you can use your LINE account but still can't log in to LINE BITMAX, please contact us at any time via this Inquiry Form.

Note: We do not currently offer chat support with an operator.

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Before you can delete your LINE account, you must first delete your LINE BITMAX account and any other services linked to LINE. If you want to delete your LINE account, do so after first deleting your LINE BITMAX account.

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If we requested information for returning your remaining balances (Japanese yen and crypto assets) but did not receive it, and over five years have passed since deleting your LINE BITMAX account, it may no longer be possible to receive a refund.

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Your investable amount is the total amount of financial assets that you can invest in crypto assets.

If your investable amount changes, update it by going to the LINE BITMAX main menu > More > Manage account > Change account details.

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Select the section below that matches the error message you see when deleting your LINE BITMAX account, then check the corresponding solutions.

An error message saying "Your crypto assets exceed the minimum send amount" appears

See this Help article.

An error message saying "Your JPY balance exceeds the withdrawal fee or have any pending transactions (Lending)" appears

See this Help article.

Another error message appears/I'm unable to perform the actions to delete my account

An error message saying "Action is required on your margin trading account" appears

Follow the instructions below that match your situation after confirming whether:
• There is a balance in your margin account.
• There is a negative balance in your margin account.
• You have any positions or unfilled orders.
Note:
- You can check your positions and unfilled orders from the LINE BITMAX home screen > the relevant crypto asset from the Brokerage tab > the 信用取引/注文履歴 (Margin trades/Order history) tab.
- Tap here to go to the LINE BITMAX home screen from your smartphone.

If you have a balance in your margin account:
Please transfer the Japanese yen to your spot account.

If you have a negative balance in your margin account:
Please transfer enough Japanese yen from your spot account to your margin account to cover the negative margin.

If you have any positions or unfilled orders:
Clear them, such as by making closing buy trades or canceling your unfilled orders.

See also:
Using the Crypto Asset Margin Trading Service (Only available in Japanese)
Depositing money (JPY) into your margin account

An error message saying "You have a deposit/withdrawal request or crypto asset transaction that is being processed" appears

Crypto assets you sent or received have not finished being processed or there is a request to withdraw or deposit Japanese yen. Please wait for the relevant transactions to be reflected.

An error message saying "You have any pending transactions (Lending)" appears

You have crypto assets that are being lent or returned. Please receive the loan amount and interest after canceling the loan.

An error message saying "You have an unfilled order with the exchange service" appears

Clear any unfilled orders, such as by canceling them. For information on how to check unfilled orders, see this Help article.

If you see a different error message than the ones above or you're unable to perform the actions to delete your account, contact us via this Inquiry Form.

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With the end of the LINE Pay service, your LINE Pay passcode can no longer be used. To continue using the LINE BITMAX service, you need to set a new passcode.

If you didn't set a new passcode by 11 am on April 23, 2025, some transactions and features have been restricted. To lift these restrictions, you need to verify your identity using your My Number Card. For more information, see the following Help article.

[Important] If you haven't reset your LINE BITMAX passcode by April 23, 2025

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If an error message saying "Your crypto assets exceed the minimum send amount" appears and you can't delete your account, follow the steps below.

1. Check the types of crypto assets you have and their Japanese yen values.

From the LINE BITMAX 口座 (Accounts) screen, scroll down and check the types and Japanese yen values of your crypto assets.
Note:
- Tap here to go to the 口座 (Accounts) screen from your smartphone.
- For Flare (FLR), if you have FLR 0.2 or more, please send it to another wallet.
- If you don't have a wallet to send FLR to, or if you have less than FLR 0.2, please contact us via this Inquiry Form.

2. Send any crypto assets with a Japanese yen value of JPY 1 or more to another wallet or sell them on the brokerage.

• To send crypto assets to another wallet, see this Help article.
Note: You can only send crypto assets to another wallet if your balance is the minimum sending amount plus the sending fee or more.

• To sell your crypto assets on the brokerage, see this Help article.
Note:
- Once sold, crypto assets are converted to Japanese yen and reflected on the メイン口座 (Spot account) tab on the LINE BITMAX 口座 (Accounts) screen.
- Tap here to go to the 口座 (Accounts) screen from your smartphone.
- KAIA can also be traded on the exchange.

Be advised

You won't be able to delete your account after selling or sending the above crypto assets to another wallet if the balance in your spot account is JPY 401 or more. Please withdraw it by following the steps in this Help article.

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If an error message saying "Your JPY balance exceeds the withdrawal fee or have any pending transactions (Lending)" appears, check whether you're lending any crypto assets from the LINE BITMAX main screen > Lending > My lending, then follow the steps below that correspond to your situation.

If you're lending crypto assets

1. After canceling the loan, receive the loan amount and interest.
2. Check the types of crypto assets you have and their Japanese yen values.
Note:
- To do so, go to the LINE BITMAX 口座 (Accounts) screen, then scroll down and check the relevant details.
- Tap here to go to the 口座 (Accounts) screen from your smartphone.

3. Send any crypto assets with a Japanese yen value of JPY 1 or more to another wallet or sell them on the brokerage.

• To send crypto assets to another wallet, see this Help article.
Note: You can only send crypto assets to another wallet if your balance is the minimum sending amount plus the sending fee or more.

• To sell your crypto assets on the brokerage, see this Help article.
Note:
- Once sold, crypto assets are converted to Japanese yen and reflected on the メイン口座 (Spot account) tab on the LINE BITMAX 口座 (Accounts) screen.
- Tap here to go to the 口座 (Accounts) screen from your smartphone.
- KAIA can also be traded on the exchange.

If you're not lending crypto assets

From the LINE BITMAX 口座 (Accounts) screen, scroll down and check the types and Japanese yen values of your crypto assets.
Note: Tap here to go to the 口座 (Accounts) screen from your smartphone.

Follow the instructions for the situation written below the following image that matches the state of your holdings.

If you have crypto assets valued at JPY 1 or more:
Please send any crypto assets with a Japanese yen value of JPY 1 or more to another wallet or sell them on the brokerage.

• To send crypto assets to another wallet, see this Help article.
Note: You can only send crypto assets to another wallet if your balance is the minimum sending amount plus the sending fee or more.

• To sell your crypto assets on the brokerage, see this Help article.
Note:
- Once sold, crypto assets are converted to Japanese yen and reflected on the メイン口座 (Spot account) tab on the LINE BITMAX 口座 (Accounts) screen.
- Tap here to go to the 口座 (Accounts) screen from your smartphone.
- KAIA can also be traded on the exchange.

If you don't have crypto assets valued at JPY 1 or more:
You won't be able to delete your account because you have JPY 401 or more in your spot account. Please withdraw it by following the steps in this Help article.

See also:
I can't delete my LINE BITMAX account

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Help center

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Account

Account

Logging in to LINE BITMAX

Can I use LINE BITMAX without a LINE account?

Can I use LINE BITMAX on PC or iPad?

Updating your registered information

Using LINE BITMAX after changing devices

Deleting your LINE BITMAX account

Can I use my old LINE BITMAX account?

My smartphone was lost or stolen

My LINE account was stolen

I can't log in to LINE BITMAX

Will deleting my LINE account automatically delete my LINE BITMAX account?

What happens to my remaining wallet balances after deleting my LINE BITMAX account?

About your investable amount

I can't delete my LINE BITMAX account

When I accessed LINE BITMAX, it asked me to set a new passcode

An error message saying "Your crypto assets exceed the minimum send amount" appears and I can't delete my account

I can't delete my account as "Your JPY balance exceeds the withdrawal fee or have any pending transactions (Lending)" appears