Gl inet routers not connecting on android apps

I’ve just purchased mango and Opal routers. Everything is working fine except one of the android games(empires and puzzle) i play doesnt connect to game server ? android app myQ doesnt connect either. I’ve tried built in glinet wifi and asus wifi and none will connect

my current setup is tmobile hotspot to glinet router to asus router ac1900.

reset both glinet and asus routers multiples without success. I can connect to hotspot wifi and everything works great. my previous setup from mobile hotspot to asus router also worked without issue.

Is there a setting i missed on glinet router ? open up port ? disable firewall ?

It could be firewall.

In GL.iNet router, can you set up DMZ to your andriod?