After 3 years, here I am once again with no Sub. Tryin’ to upgrde to S2 controller, I added my devices Playbar and Sub (new way to do it, not so intuitive, but that’s it). After that I connected the sub, it took about 10/15 minutes. Palybar+Sub are in the same room but, once again, Sub doesn’t work (no sound) neither in WiFi nor in Eth. No Boost at the time (do I really need one, with S1 all was perfect).
1 hour to make work everything, but...no way to do it. For about 10/15 seconds Sub has started, but in the App I saw the “?”. When in the App I finally saw the Sub...no sound from it. Modem AVM 7590 and repeater 1750, will try again and, eventually I must use the Boost.