LG TV doen't find mediaserver since last update! HELP !

Hi all,
today i updated my plex server and now my LG TV (via Medialink) doesn’t find the mediaserver.
What’s the problem and how can i solve it? I have to say that my english is not the best (does anyone speak german?) and my computer skills are also limited.

thx to all who help me!

see List of IP addresses and networks that are allowed without auth on https://support.plex.tv/hc/en-us/articles/200430283-Network and mentioned here https://forums.plex.tv/discussion/comment/1244304/#Comment_1244304

YOU ARE MY PERSONAL HERO !

big thx

Even after adding the IP address it does not work for me?

This is a terrible update as my TV’s do not keep the same IP every time. This needs fixed in the next update.