VPN or Proxy Service Error Message - Unable to watch Amazon Prime Video

I have a Sony tv & prime does not work with T-Mobile wifi. I talked at length with both Amazon & T Mobile. Amazon had me remove and reinstall the prime app. That fixed it for a day or so. T mobile had me change from 5 g to 2.4 g, that worked for a day or so. Then I read on this forum & someone mentioned using Amazon fire stick, which I never use as the Sony remote has an apps button. I tried the fire stick & prime works great. I guess bypassing the Sony remote was the solution. WHEW….so glad I looked at this forum….