I know a way to resolve your lost data issue, blaquedon.
Some issues you encounter when accessing your QuickBooks Online (QBO) app can be resolved by clearing its data. This can be done inside your app or through your phone's settings. Here's how:
For QuickBooks Online app:
Android
Select the menu at the top right and choose Settings.
Then select Refresh Data and choose Yes.
iOS
Select the menu at the top right and then choose Help & Feedback.
Then select Refresh Data and Refresh.
In your Phone Settings:
Android
From your phone's settings, select Apps (varies by device).
Choose the QuickBooks app from the list and select Storage.
Select clear data.
iOS
From your phone's settings, select Settings, then, click on General.
Choose iPhone Storage.
Select an app that's taking up a lot of space. To free up the storage without deleting the documents and data for the app, select Offload App.
You'll want to bookmark these articles. It can help you navigate the app for your future reference: