IOS: React native app working in IOS simulator not installing in Testflight devices

[muthu kumar]

My IOS app developed in react native working properly in the simulator, validation also passed, and uploaded to AppStore, but not working in Testflight.

When clicking on install, It shows Installing, after a few seconds it fails. asking me to reinstall.

I use auto sign. 

Any IOS developer please help me to fix this. 

Thanks in advance.