If you are running the latest Flashforge firmware, version 7.2 at time of writing, you may have noticed that the unload function appears like it has stopped working. 

The touchscreen will still register your input when you press the load/unload button, but the drive wheel will not turn when the temperature is reached. 

This is an intentional feature with the new firmware to prevent the filament from wearing at the drive wheel if the filament is jammed or otherwise stuck. 

PLEASE simple depressing the lever arm on the extruder, pushing the filament down to melt the tip and then gently pulling the filament up and out while keeping the level depressed.

Bilby3D hopes you found this helpful