hello,
had the same problem as you on predator 2.18.
no cabo channels or gran via,checked all the possibiities
but couldn¨t get these channels to clear,although i could
pick up polsat sport(13e in nagravision).
later upgraded to predator 2.19,and still the same problem.
put on sly news on 30w cabo,and waited about 10 mins
to auto update ,but nothing. rebooted, tried gran via,nothing.
rebooted,while still on gran via,and also disconnected power from mains.
waited 2 mins,connected everything,and all channels cleared.
hope this helps.