We appreciate you for bringing this matter to our attention. Let's fix this together so you can start using QuickBooks Online (QBO) seamlessly again.
To assist you with this, may I know if you can access your QBO account in your browser or a private browser? This way, we'll diagnose the issue and provide the appropriate steps to fix it.
In the meantime, you can log in from your QBO mobile app and perform some troubleshooting steps to clear any corrupted cache that is likely causing this behavior. Kindly follow these steps: