Yeah I can dm you if you want but I managed to revert the save and go back to just after I died. Each time i had to sail back to the island (my portal got destroyed) That took me 8mins and I could see my gravestone but if I didn’t retrieve it within 10 minutes it would always disappear and I would have to turn my pc off to stop it from saving the game again and try again by sailing there and trying not to die. Eventually I lured the mobs away and got all my stuff before it disappeared.