Can't connect to my plex server thru my xbox one anymore.

I have tried the troubleshooting and read thru the threads on the forum.

When I try to connect it says I have to check the connection to my server. I can log in and the xbox is connected to my network.

I have’nt found any log files. Have checked the directory that the forum said.

I had´nt checked the right directory, but now when I try to attach the log file it sais that the file is not allowed.