I cannot reauthorise consent from the bank. Everytime I give consent. QuickBooks shows an error

Hi there, thanks for posting on the Community. We'd like to make sure that we're able to get your bank account re-connected in QuickBooks.

Which bank provider are you with, and do any specific messages show when re-authorising the account?

If an error code (number in bracket) shows, you can check out our guide on common bank errors and the steps to fix these in QuickBooks Online. We'll be here if you need any further support.

Hello thank you for getting back to me. The error it shows is 400: something unexpected happened. I have tried it multiple times this week and the last, still showing the same message. 

Bank provider is Barclaycard credit card. 

Hi s-hassanjzaidi-g Thanks for confirming. We'd be grateful if you can clear the cache and cookies on your browser for all time, or use an incognito window and attempt to reauthorise the connection. If the same error persists please fully disconnect and reconnect the bank account following the steps in the article provided. Please note, as per the article, that you account for any transactions that are showing on the for review page of the banking section: https://intuit.me/3N9rJfB