Was anyone from Verizon tech team or anyone in community able to identify the issue/bug, any recommendations you may have for me?

I have tried to use this app with iPhone 7 Plus, iPhone X, iPhone 8 it works just fine both on WiFi and cellular data connections. Problem is only with XR.

is there a way for me to do clean install this app, that will ensure that no old configuration are dangelling around prevenyit from launching?