Cannot log in - This device, its operating system, or other software is not compatible with this application

[Saphir0]

Looks like it. Rebooting the phone works.

[Nuts7203]

USE WHAT APP TO CHECK IT?

[Saphir0]

play.google.com

Play Integrity API Checker

Get info about your Device Integrity through the Play Intergrity AP...

Free

[Fortanina]

My friend has the same issue on his red magic 7 pro