Beamer not playing videos?

I have a BenQ projector and have it connected to the app with my mobile phone in desktop mode. But somehow I can't play Disney + or netflix videos. You can hear the sound but without a picture it does not help me. Videos from Youtube or the gallery work.

This will be a DHCP problem… Copy protection…

The blessing of digital image transmission…

Maybe copy protection? Would be too nice if you could see the films you pay for 😂