Get the transponder info from lyngsat or kingofsat and scan the single transponder manually. See if the channel(s) are found in the list when the transponder scan is complete. This will take 30 seconds.
If you see them in the list exit all menus and select the channel by using the Green button to select 'Satellites', select '28e services' and then find the channel(s) in the list.
See what that turns up.
It may be that the entry in your bouquet is out dated.
Hows sunny Skem by the way ? If it wasn't for that big hill, I could see you from here !