I've got a opticum 9600 hd ts

I can watch with my tv providers card to the decrypted channels, I can record the channel i'm watching, But i can't watch another channel on the same transponder.

I don't have that problem when it's a FTA channel and not with DVB T (also FTA)

It also happens with the Bis tv channels, decrypted by softcam.

I've got the latest firmware 3.28, hardware 3.02, loader 4.03

Can someone help me?