I do not have a problem with getting to MyMSTeam using the web. Getting use to the new changes of MyMSTeam is taking time.
I sometimes do. I also have problems getting the page as 2 move.
I haven't!
I have on and off for years. I notified them.
I mostly use the website and have not had any problems.
I have the App to use when there is a problem with the website however, it has been awhile since I needed to use the App.