box 500s lost some channels and scanned but there still not back any help thanks

[psxchipper]

got a server sorted and at first all channels show and shows the entitlements then after a couple of weeks lost certain channels ,and they dont view, but the c lines are getting them, today i done a cccam reset as allways and done nothing diffferent than normal and they showed again for 1 hour then picture froze and lost them again is there a reason for this ?

pli 3 im useing and yes i have not lost entitlements yes the card is inserted properly and yes i have done a rescan so what could it be thanks