If you have the "Extra Security Sign-on" selected for your Bank of America credit card account, you will encounter some errors when you attempt to sync your credit card. Here's what to do: first log into your Bank of America account, and turn off the "Extra Security" feature. Then add the credit card in the TravelBank app. After you have successfully added it, you can go back and reactivate the security features in the Bank of America account.

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