I tested my 2020 Fathom today with the new and improved app.
yippee! This app actually works. It provides all of the basic information, did not freeze, will save your ride to view again later, shows assist levels, shows battery level and an estimate of distance with the current charge.
When the app was connected to my bike it actually went through 3 updates but there is no indication of what was updated. Perhaps the new app/ motor can only load up part of the app at a time then needs to start again?
anyway, for me it is working and we finally have a functioning app that compliments the bike.