my softcam biss kyes work well by mgcam,and gbox but no by cccam way? dreambox 7020hd

the irib varzesh channel was open by cccam emu sotfcam, until yestarday but suddenly stop working with cccam, i didi not change anytthing in my dreambox 7020hd.
i change the cccam to mgcam and gbox then the poroblem solved.
what is the problem?
way cccam can not open the channel?

can i run mgcam and cccam emu at same time?