Hi - I am located in the US. I believe that there aren’t any Plex changes requiring for me to use a new EPG source.
I’m on the latest Windows Plex Server build - I just updated a few minutes ago.
I have noticed that I now need to keep manually Refresh guide data in order for the next couple weeks of programs to get populated. I do have the Perform refresh of program guide data server setting configured to automatically update at 4:00 AM every morning.