First up, double chec that the option is enabled. Then, start a lengthy plot with the engravr plugged in. (You may wish to fully remove the pen arm before doing this, so that it’s not swinging around.) While the plot is still going, try adjusting thr current adjustment pot on the engraver board, through the full range of motion available.
Is this the soldering kit version of the engraver, or one that came pre-assembled?