No event reminders from Companion app (Android)

Since the patch for the drops issues, I’m not getting reminders of events I’ve entered. Have asked for 30 mins notice on at least 3 events now and not had the usual reminder. Have checked notifications setting on phone (Samsung Galaxy S7 edge) amd set to receive. Is this a known issue (couldn’t find another topic in Forums)? Do I meed to raise a ticket?