Hello there, Luise. We'll share details to help you sync your data from the web browser version of QuickBooks Online (QBO) to the mobile version of the program.
Before anything else, know it isn't the experience we want you to have when using QuickBooks. To ensure we can address this situation, can you tell us more about the issues you encountered when utilizing the QBO mobile app? Also, we'd like to know more about the instructions that you followed when setting up the application.
When using the mobile version with iOS or Android operating system, you'll want to ensure it runs the 11.1 or newer for iOS and Nougat 7.1.1 or higher for android users. If your device meets the system requirements and the issue persists, we recommend uninstalling and reinstalling the program while ensuring it has the latest updates. This way, you can take advantage of the recent fixes and improvements.
For more details, please see this page: Fix common errors in the QuickBooks Online mobile app for Android.
Additionally, here's an article to see the full capabilities of the mobile app version of the program: Compare mobile app features.
Our team highly encourages you to visit the Community space or comment below if you need further assistance utilizing the application or have other questions about the mobile version of QBO. As always, we'll make sure to be around to help you out again.