Matrix Revolution vs. STRONG 4355 Evo problem

I have a problem, please help me !

I’ve bought a STRONG SRT 4355 Evolution receiver and a MATRIX REVOLUTION cam with original Mrev 2.12 software. A tried it on the Hotbird (Polsat, CFI Peco Pro, etc.) with new keys but it doesn’t decode the channels. The receiver recognises the cam, and I can browse in the Mrev 2.12 menu, I can edit the keys etc., but It doesn’t decode the channels.

I read in more forums that this receiver works with MATRIX Reloaded cam with Mrev 2.12 software. What is the problem ?