"Unreachable" on localhost and "X-Plex-Client-Identifier is missing" errors

[ing_glz]

Hello @anon18523487, could I get some attention from a Plex team member with my issue please which is older than this one and only a Plex pass member is answer me:

Server Plex at PC with Windows 7 is not available for Samsung Smart TV in the same local network

Server Version#: Version1.19.4.2902 server with windows 7 ultimate service pack 1 Player Version#:Many players: 3 smart TV apps with Plex for Samsung 4.25.2, Tizen 2.4.0 The past June 7th I had a change of modem by my internet vendor and after that I realize I can’t use the streaming service anymore in my TV’s, cellphone neither in other PC. I really did as many things as you suggest in your support pages: Sign out and sign in in the server, Reviewed the remote access settings but it can’t …

Thank you in advance.