The QuickBooks Online (QBO) mobile app is always in sync with QBO on the web. Then, any task you do or information you add in the app shows up on the web, and vice versa. Also, your data is always up to date and available when working in your Online account.
If the data is not syncing from your mobile app into the web version, you can try clearing the cache app data in your phone settings. This helps us to refresh your QBO mobile app.
From your Android phone's settings, click Apps(varies by device).
Choose the QuickBooks app from the list.
Choose Clear data.
If the same thing happens, you can try uninstalling and reinstalling the app.
If the problem persists, I'd suggesting contacting our Customer Support Team. They'll investigate what's causing this issue.
Click Help on the top menu.
Choose Contact us.
Enter mobile app is not syncing in the What can we help you with? field.
Click Let's talk.
Choose Start an email to connect with us.
In the meantime, you can access your Online account using a supported web browser to run your business.
Please add more details by posting a comment below if you need anything else in QBO. I'm here to help.