Does anyone know how to get bank accounts and credit cards reconnected? Ive gone through every instruction and get to the final bit that says error

May I ask what specific error you've encountered and what kind of instructions you've followed? Doing so will help us determine the exact scenario you experienced, Bpfullen.

In the meantime, let's perform some browser troubleshooting steps to see if this is a browser-related issue.

To start, let's clear your regular browser's cache to restore the program to its default function. Web browsers collect a cache to save time when loading repetitive data and images. This cache becomes outdated and corrupted over time, which can cause this kind of issue. You can also use other supported web browsers to access QuickBooks Online (QBO).

Refer to this article to identify and fix common bank connection errors in QuickBooks: Fix bank connection errors in QuickBooks.

If you have further questions, feel free to reach out; I'm always here to help.