Doesn't work with V11

[sesopenko]

Upgraded to foundry v11 306 and the drag ruler integration no longer displays the colour codes for the action consumption and doesn't prevent players from dragging through walls.

[GeorgeWL]

As of v 3.0.0 of pf2edragruler, the module is no longer under active development and many features have been removed for stability reasons. Older functionality may be available on older versions but no support will be offered and they are unlikely to function as expected on Foundry V11 or newer.

Basically the devs have abandoned the module. If you want an update, someone's gonna have to fork it