Pixel 3a: Wireless External Monitor with MiraScreen

[A Former User]

I have a MiraScreen Dongle, with which I managed to cast the screen of a Laptop running Windows as well as an Android device running /e/ OS. With the Pixel 3a (OTA-23), I can select the screen and try to connect, but after a while I get an error message "This device failed to connect to <screen_name>".

With the two devices where this works, I get first a message "DO P2P connection" and after a few seconds "DO RTSP Connection", then the screen is mirrored. With the Pixel 3a, I also see the message "DO P2P connection", but then after ~1 minute the mentioned error message appears.

Does anyone know why this happens, or whether there is a workaround/hack that I could try to make this work? Any help is appreciated!