The channels in DVB-S2 work without any problem, the problem is with the channels in DVB-C, in the cable channels. Oscam works without a problem.
dvbs and dvbc are different. Probably You have card for satellite and data are decoded..
If You used operator device for dvb-c probably it has integrated card (data has to be somehow extracted). if external, configure oscam to use this one. o8008 has only one card reader, so you will need other reader (may be other lan card server or usb pcsc/ftdi ..)
or it hamy be oscam problem, which can not "undestard" conax.
type in commandline
oscam_name_you_use -V to chceck if it supports conax.
i checked kitte888 and jej@on, both support