Jiayu G3 - Root Error - mount root permission denied

Hi,

I recently rooted my Jiayu G3 phone, to put a new ROM on it using ClockWorkMod..

Today, I tried to go to CWM again though MobileUncleTools, but it says: "Root your Android First!!!"

So I tried to reroot it, using the bin4ry tools, but it always says "mount root permission denied" are you root?..

MobileUncleTools says its Not Rooted, so i dont know how i can ROOT it again??

I have a ROOT Explorer, but i dont know what to do etc with it. If i try to edit a map in the Root Explorer, it sas: Your Device doesnt' seem to be rooted.

Any ideas? My ROM is really annoying now cause my Wifi doesnt work on it

thx