Channels x Android TV

I had a Philips Androd Tv and I have installed Kodi succesfully.
It works perfectly for movies.
But, for live channels, or I watch the channel for a while and it stops, or I receive an error message like “fail do play” (Falha na Reprodução, in portuguese (Brasil)).
Ele funciona perfeitamente para filmes.

I´m using iptvonline iptv list.
Do I need any aditional cfg to have my channels working?

Tks.