So it’s about 7 weeks since my last post. 3 weeks ago, I replaced my Smart Things with the new Aeotec v4 with Smart Things. I took out the Sonos hub as it’s not really necessary. I got everything back working, and decided to try the 5 Inovelli switches again. They all came up immediately and have not failed in three weeks.
That’s great news! Sounds like it was a problem with the old hub. Maybe a bad radio module or something.
I think you are spot on. I ordered more switches for the rest of the house, so excited to move forward.