The avov vixo2 should connect.
I have it connecting to rocket here.
If I exit out of the OnLine app and outta IPTV (disconnect), then I have a bit of trouble reconnecting but it does.
Exit that connecting message and enter the Settings option you see there along side the VOD and Live TV option.
Use that menu to connect. Highlight the server and depress the Red button.
If it connects, exit that menu and into Live TV option and choose one of the Encore channels.
It might take a few seconds but if that loading icon appears it should load.
There is on-going server maintenance going on as vampirito posted and many channels will not load, but many will too.
And also with these Avov receivers, you do not need the http prefix showing on the server URL
11.iptvrocket.tv is all you need.
Change that and it may help