If you previously synced an older Method account, you'll need to reset it to accept a new Method account
If you are on QuickBooks Desktop, and your computer previously synced to an old Method Account, and you wish to sync a brand new Method account, you will get an error message stating:
Error: Invalid Company Account. Check the spelling and try again.
Furthermore, you will find the credentials pre-filled with your old account.
In order to fix this, you will need to wipe the old credentials to enter in new ones by following the below steps.
You should now be able to sync with your new Method account credentials.