No sound at all via Optical to soundbar, T.v volume plays fine and when connecting box and soundbar via Bluetooth it's OK... I read somewhere changing sound settings from Auto to PCM helps. I'll try that in the morning and see.
I just realised I disabled the "TV" option a while ago. Got it back on and have the guide available now. :)
Thanks for the help. I must say the Kodi add on Def more practical than the normal Dstv app from playstore.