After updating to iOS 15, Google Authenticator may have problems with missing or copied verification codes:

If you haven’t updated

Please delay the update, or back up your key before the update, and transfer the verification code to another device.

We highly recommend our traders postpone any updates till further notice. However, if you still would like to proceed with it, kindly ensure that you have either kept a secured backup of your Recovery Key Phrase (RKP) or manually transfer your Google Authenticator codes into another device first before updating to iOS15.

If you have updated

In the event that an upgrade has been performed, you may encounter duplicates inside your Google Authenticator app. Kindly be advised to refrain from deleting any duplicate keys to avoid issues when entering your Google 2FA codes into Bybit.