Issue: Keep Button Active When Out of Stock

I’m trying to add a waitlist option to my variations that are out of stock, but you have to select the variation before you get the Waitlist option. Right now, if an item is out of stock, the plugin won’t let the user select that variation (instead disabling the button). Is it possible to tell the plugin not to disable the variation button if it is out of stock?

https://wooflinen.com/woof/100-bamboo-sheet-set/

I need visitors to be able to click it.

Cheers!
Ryan