USB Camera Pro app compatibility with EOS 90D

[TLE67]

I was wondering if there is a way to use USB Camera Pro app with my Canon EOS 90D? I have a hard time viewing the small screen and want to attach my cell phone as a bigger viewing screen.

[TLE67]

I have set everything up as you advised. I get a blank screen on my camera and color bars on the phone screen. I have a Samsung Galaxy A54 5G.  I'm guessing it's not compatible.

[TLE67]

The Canon connect works with it but wont let me go full screen.