Betting this a Roku issue.  With my old Roku stick the Pandora app works on 2 TVs, with new Roku Express 4K all apps work except Pandora, same error, on both TVs.  Internet speed should not be issue, mbps 933+.  Suspect I'll pitch Roku Express, Roku doesn't appear interested.  I tried all suggested efforts to correct issue, none worked.  ... View more