After i select the activity and the sleep timer kicks in (3min) the screen does go off. I then use the scroll wheel to wake it but the screen is no longer on the activities screen, it's on the main Sofabaton screen that lists the options Activities / Devices / Set. In addition, I got another email advising that I need to perform an update but as I mentioned, 3.2.1 is the latest update to the app and issue still remains.

UPDATE: received email from support advising issue is resolved in new update and I should update firmware on remote. Updated app to 3.2.1 and tried to update remote but got message "No New Update"

UPDATE: installed app on a different phone and i can access hub again. Not sure why I still can't access on Pixel 6 phone anymore, but at least hub is accessible again.