No routing there ( Every router with wifi can be used like AP just must turn off DHCP server on it).
Is not the network. I connected TV directly to the server is the same Plex app is ok - DLNA plex nothing.
Is it posible some settings on server doing wrong? I think they are on default but … not sure 
Enable the DLNA server
DLNA client preferences
IP=192.168.1.101,DirectPlay=false,DirectStream=false,LocalResolution=320x240,RemoteResolution=320x240,OnlineResolution=320x240,LocalVideoQuality=24,RemoteVideoQuality=24,OnlineVideoQuality=24,SubtitleSize=250,AudioBoost=250,MusicBitrate=64
DLNA server timeline reporting
DLNA default protocol info
http-get::video/mpeg:,http-get::video/mp4:,http-get::video/vnd.dlna.mpeg-tts:,http-get::video/avi:,http-get::video/x-matroska:,http-get::video/x-ms-wmv:,http-get::video/wtv:,http-get::audio/mpeg:,http-get::audio/mp3:,http-get::audio/mp4:,http-get::audio/x-ms-wma,http-get::audio/wav:,http-get::audio/L16:,http-get:image/jpeg:,http-get:image/png:,http-get:image/gif:,http-get:image/tiff:
DLNA media renderer discovery interval
60
DLNA server announcement lease time
1800
DLNA server description icons
png,jpeg;260x260,120x120,48x48