App installed in Teams native is not showing up in iOS Devices

[ArshadNabi]

Decisions App installed in Teams native is not showing up in iOS Devices .
Tons of our users are not able to see nor access it anymore on their iOS phones. And it's been a blocker for iOS users. 

We tried Reinstalling/ Resetting the Teams App but it didn't help.The issue still exits. 

What might be the reason for that?

iOS Version: iOS 16.3

Teams Version:

[#2]

This happening with multiple of our customers. Somehow they are not seeing the pinned app from Desktop Teams in Mobile Teams, and not able to find it from the list when trying to install it on Teams Mobile (from the tray)