I'm a psychologist and I meet with clients using this software. Sometimes people have problems with their invite links or their hardware and it takes a few minutes for them to manage to get into the session. Proton Meet wants to end and shut down the session when I've been alone for some minutes (not sure how long) but please allow me to lengthen this time, as it would create a lot of trouble for me and my clients if the meeting was abruptly ended without me noticing (cause at that moment I might be sending them another invite link) and I would have to create a new one. Besides this, I find the software easy to use for me and my clients :)