The app crashes almost every time I try to add my trips , bank account identification doesn’t go through and gives me an error

Hi ivorymusicacadem,

Thanks for reaching out in the Community! I'd be happy to provide some information on troubleshooting your mobile app and bank connection issues. 

When the application is not fully functional, one of the causes is the app's data. To isolate this, let's reset it. This process plays the same role as clearing the cache from your web browser. Please refer to the steps below.

In your Phone Settings:

From your phone's settings, tap Apps (varies by device).
Choose the QuickBooks app from the list and select Storage.
Select clear data.
 

Once done, restart your device and reopen your QBO mobile app to double-check.

However, if the same thing happens, let's uninstall/reinstall the app. For detailed steps on how to do it, please refer to this article: How to download the QuickBooks Online mobile app.

For bank connection errors, What is the exact error message you are getting when trying to link your bank in your QuickBooks app? This way, we can review if there's an ongoing investigation or provide you with the right solution.

For the time being, you have the option to manually upload your bank transactions. Here's an article for the instructions: Manually upload transactions into QuickBooks Online.

You can also take a look at this article to find and fix common connection errors in QuickBooks: Fix bank errors in QuickBooks Online.

Let me know if you have any other questions. I'll be right here to provide additional assistance. Wishing you a good one!