hi Electronic program guide use to work few days ago (when i bought box) , in the last 2 days it doesn't , tried reset box/portal any advice?

hi all i am testing out few options and yesterday i bought IPtv66 service and used STB emulator on my K3 android box. i managed to edit MAC and login into the service but my issue is: most of the channels don't work (when i choose a channel nothing switch). is it something i did or that's the...