Error 108 means that there's a notification from your bank on their website, mpretorius.
These messages are ones about updates, which can block the connection to QuickBooks.
To fix this, I suggest signing in to your bank's website. Also, ensure to use the same credentials you use to connect the account to QuickBooks. If you need to take any action, the message should give you specific steps.
Once done, click Update to refresh the connection and check if the error is resolved.

If you didn't see notifications on your bank's website and still see the error, reach out to your bank. They can provide you with details about certain types of messages that can cause error 108.
Check out this article for detailed information about fixing error 108: Troubleshoot and fix banking errors.
The Community is always here if you have other questions or concerns.