In Easel, open Machine Inspector and in the Console window write $$ and press Enter
A full list of your GRBL parameters will show, take note of value $100, $101 and $102
$100 = X axis (left and right)
$101 = Y axis (back and forth)
$102 = Z axis (up and down)
You need to recalibrate these three values, check this video for reference:
Changing the GRBL parameter is simple enough:
In Console window just write the new value like this $100=xxx followed by Enter