I have been having this problem today where I have to do an iptv reset and then clear cache/renew token on potato tv..
It works a few minutes and then when I change channels I'm getting the 'screen test' screen on all channels or it doesn't bring up anything on the channels I try.. If I reset iptv, wait a few minutes, and then clear the cache on potato I'm able to watch again..

Also, I notice that I can't find most of the MLB games in the list. Is there another addon that's recommended? MLBSTREAMS on prosports only has a single link for all games and it doesn't work... Trying to watch a few of the games that are on right now.