App crash on ipad and also on some android phone

Hi, I have a big problem, I sent the app to apple and they replied like this

Guideline 2.1 - Performance - App Completeness

We discovered one or more bugs in your app when reviewed on iPad and iPhone running iOS 13.6 on Wi-Fi.

App stalls after launch.

Next Steps

To resolve this issue, please run your app on a device to identify any issues, then revise and resubmit your app for review.

If we misunderstood the intended behavior of your app, please reply to this message in Resolution Center to provide information on how these features were intended to work.

For new apps, uninstall all previous versions of your app from a device, then install and follow the steps to reproduce the issue. For updates , install the new version as an update to the previous version, then follow the steps to reproduce the issue.

also the app crashes on android 8.0 on s7edge

Please help me i will send link to my projcet in private

same ononeplus6t and iphone se
i think some places make mistakes variables , conditions , etc
i will try send me the link

same problem.

Did you find any solution?

Same issue here. Just started happening on iphones that have my app installed. The user did made no changes to the system and phone, and the app was working perfectly until 2 days ago they started randomly crashing.

same well thunkable doesnt support android too much