Hi Andy I retested this issue again more detailed. After starting the video by pressing the round button it becomes square. If I immediately stop the video, it does stop. This works only for 2-3 seconds. After this time, the square button becomes round again. The video is still capturing in the EOS ...

Starting to record a video by pressing the red button on the bottom of the app works.

By pressing the button again, I expected that the recording of the video stopps - but the camera does not stop to record the video.