Geeetech

Thanks, that problem was solved.
But now, when it is working fine, after a short time printing, it stops flowing the pla without no reason, the extruder engine works fine but it can´t introduce more thread because de extruder head is full o material.
What can happen?

Hi, i have got my new pro w and when i pretend to print any figure it starts good but at a time the thread gets stuck and stops coming out.
Now i have a piece of thread inside the extruder, how can I get it out?
And why is this happening?
Thanks to all