if clear data from buzz app will delete only servers. nothing will happen to your other apps. if you reset your box the you will loose your apps. since you are having issue with buzz tv app only thats why I recommend clear data from buzz tv app only. hope this will help.
hmmm try to clear cache and reboot and see if that helps. try to clear data as well if possible. you will loose server info...etc If you clear data. do it on your own risk. write down portal and credentials...etc before clear data. make a back up of server if you want to.
some providers dont care about anything. some lock with your ip, your isp, device id, geo location..etc. I like the one locks with your info so not easy for people to steal.