Welcome back to the Community, @JGill.
I appreciate the steps you’ve taken in order to resolve the error message when adding a bank in QuickBooks Self-Employed (QBSE).
Even with a trial version of QuickBooks, you should be able to add a bank account without any issue. I’ve got additional steps you can try to fix the problem.
Let’s uninstall and reinstall your QBSE app. Here’s how:
Uninstall app in android:
1. Go to the Settings app and tap Apps or Applications.
2. Scroll down the list until you find the QBSE app. Tap it and hit Uninstall.
Reinstall app in android:
1. Visit the Google Play Store.
2. Tap on the 3 line icon, then My Apps & Games.
3. Go to the Library tab and reinstall QBSE app.
Open the app and try adding the bank. If you continue to get the same result, please get back to me so I can take a further look at the issue.
In the meantime, you can open and connect your account in the browser application by logging into https://quickbooks.intuit.com. For more information about adding a bank account, refer to this article: https://community.intuit.com/questions/1469540.
Let me know how it goes by leaving a comment below. I’ll be here to help. I’m looking forward to your response.