My friend died on server and his grave appeared. But his grave is Unclickable, he is clicking LMB RMB but he can't take his items back. When I try to take them there is now label such us "you can rob the grave in 1 hour". He can only take it as a block and move from place to place

I believe this is a known bug happening where moving the grave will remove all its data. You can access it through /yigd grave commands. Ket me know if you need any help. My intention is to fix the issue as soon as possible, although at the moment I don't have a lot of spare time

Same here, except it doesnt even show in the graves menu

Assuming my analysis of the problem was correct, the issue is now fixed in the latest version of the mod for 1.20 and 1.21 fabric, as well as 1.21 neoforge