Usual checks are as said
Reboot router. Wait til router fully connected again. Reboot box.
Menu
Setup
Softcam
Softcam manager
Go to whichever is ticked
Yellow to restart.
Check connection
Menu
Setup
System
Network
Devices
Network test
Green to start
All should end up green
if you into your channel that's missing like sky sports 4 you will see a blank screen press up on your remote the channel list will come up now press the red button (ALL) you will see about 4/5 sky sports 4 press one of these your missing channel should return. note you may have do this everytime you want to watch channels that are missing.I've lost sky sports 4 sky Atlantic +1 and Eurosport's 1&2 on both zgemma and openbox whent to do Chanel list on openbox and the website says that it's not channel list problem, it's a new form of encryption that is affecting all non official sky boxes. You can get sky sport 4 via Ireland feed but it also says that no doubt more channels will go and they don't know when or even if they will return
Cheers for that will give it a goif you into your channel that's missing like sky sports 4 you will see a blank screen press up on your remote the channel list will come up now press the red button (ALL) you will see about 4/5 sky sports 4 press one of these your missing channel should return. note you may have do this everytime you want to watch channels that are missing.