I had already registered a case in Apple but no one has give properly response to me

You are not addressing Apple here. This is a user forum. We are all just Apple customers like you.

If you're having a problem with a 3rd party app, contact the app developer for assistance.

If a 3rd party app installed on your iPhone is not working properly you have to contact the app developer not Apple, please follow this link on How to contact an app developer - Apple Support