I use it pretty much daily as well for viewing my cameras. I've found the video feeds don't load if I use face ID and leave the app and come back into later. However, with face ID off coming back into the app my video always loads fine.
I'd encourage folks to do two things. First, run the beta app. Details here. Second, submit feedback using the Settings tab > Make a wish. The mobile app is being updated almost weekly and feedback is important for fixing bugs and adding features people will find most useful.