Cannot use IPV IPTV Simple client


I just installed my Pi 3 with OSMC including May update. Everything is working nicely except the PVR IPTV Simple client addon. Whenever I activate it it seems to turn off by itself. It says it’s active, then I go to TV and I get a message that no PVR client is active. I go back to addons and find thet PVR IPTV Simple client is off.

Did anyone have this kind of problem ? Do you know how to fix it ?

Thank you