OK. I have been using Samsung phones and tablets for years. No real issues. I have also been using VZW message+ for years. No real issues, even when switching to new devices. Once I got the S21 ultra, the problem began. I cannot get the messaging to sync with my tablet. It continues with my Z Fold 3. I have tried working with VZW and the app people but no one seems to know what to do to fix it. Both the S21 and the fold are unlocked but with VZW Sims. I have tried to go back to the old tablet where it worked and it doesn’t work there any more either. Could it be the unlocked phone? Anyone know what I can do to get this to work again?