I can't install a hand on my guy.

He still has a hand, it's just missing a few fingers. I wanted to replace it with a fresh hand, just to see if I could. I grew it, and I have it in storage. The option to install it is not coming up, nor is the option to remove the hand missing fingers.

The guy is a Krogan from Rimeffect, and the storage is from LWM's Deep Storage.

Any ideas?