Fixing your bank connection is my priority, @jnuttallplumbing.
It's possible that you enter the additional security requirements, such as security questions or one-time passcodes (OTP) incorrectly. To get this fixed, please follow these guidelines below:
If you get the same result, I suggest logging in to your bank's website to make sure your security questions and answers are correct.
I'm adding this article for more details: Enhanced Standard Feed Connection Errors.
Just in case you want to manually upload your bank transactions, feel free to check out this article for the detailed steps and information: Manually upload transactions into QuickBooks Online.
Please know that I'm just a reply away if you need any further assistance in managing your bank accounts. Wishing you and your business continued success.