So, I was going to add one of my devices to my existing favorites for easy access. I went to the bottom of the app, and tapped the lightbulb icon to open the "devices" page so that I could star the device on my favorites page. The app immediately closed. Tried 4 more times, and this repeated (and I got a pop up that the app keeps crashing). All other functions seem to work fine in the app.
As noted, I think this issue is fixed on the current beta release, 2.1.1 (320). I have no issues on my S21 when tapping on the Devices tab (lightbulb icon).
I think you're good, and you can wait for the production release, or join the beta to get the current beta build w/the fix (and other fixes).