Serviio v2.2 on QNAP TS-251A QTS 5.0
I've just updated to QTS 5.0 and to Serviio v2.2 on my TS-251A and it seems my devices can't see Serviio DLNA server anymore. The GUI is working, I can see my shared content there, but none of my TVs or other devices on my network can detect Serviio and Serviio can not see them neither; all of the devices are unknown or inactive under connected devices.
Your suggestions to resolve this issue would be greatly appreciated.
Thank You very much in advance!