We understand your frustration about being unable to access your account using the Quickbooks Online mobile App @Mark. Please know that I'll be here to help you how to fix this error you encountered.
Let's resolve the issue by refreshing data to help your QuickBooks Mobile app update the latest information.
For Android:
- Select Settings and tap the Refresh Data option.
- Click Yes to confirm the action.
For iOS:
- Go to the menu or the three horizontal lines icon.
- Choose Help & Feedback.
- Press Refresh Data and Refresh.
If you encounter the same issue, uninstalling and reinstalling your QBO Mobile app can also aid the error.
As a workaround, we can log in to your account in a web browser and renew your browser. Visit this page and see the supported browser: System requirements for QuickBooks Online and QuickBooks Online Accountant.
I can still lend a hand if you need more assistance. I want to ensure you're back on track and can access your QBO mobile app.