The app unexpectedly exit

Hi @KWAN HO5CD6 

Hope you are doing well.

As you have mentioned that application crashes whenever you try to modify a scanned document. Please check if Adobe Scan application is updated to the latest version if not kindly update the application. And for application crash we need few details to understand the issue better:

1. Could you let us know if there is any error message when app crashes?

2. What is the iOS version you are using?
here is a help document you can refer to: https://www.adobe.com/devnet-docs/adobescan/ios/en/troubleshooting.html

3. If you are connected using wifi, try connecting it using mobile data and check if that helps.

4. If possible, kindly share a video of the application crash happeing. 

Looking forward to hearing back from you.

Thanks, 

Harsh