You can find the downgrade firmware here- https://rog.asus.com/phones/rog-phone-5s-model/helpdesk_download/?model=rog%20phone%205s Image version 18.1220.2201.192 for WW or 18.1220.2201.189 for CN version.Before you start the downgrade, please make su...
The same thing happened to me! Cleared the cache & data, then uninstalled & reinstalled the game. Didn't work! Finally did hard reset the phone but the same result! Only downgrade to android 11 & try install the game again is my last option!