Here is a general guide to clearing app cache, it may be different on your device but it is VERY important as sometimes can cause issues with playback of IPTV in any app
This is NOT an exact guide for every device, you will have to paraphrase, essentially it is generally VERY similiar for most devices however!
CLICK SETTINGS
CLICK APPS
CLICK TIVIMATE OR CLOUDFLIX
ONCE IN THIS SCREEN CLICK CLEAR CACHE
CLICK OK
CONGRATS YOU HAVE CLEARED CACHE