Sadly our backups don't go back that far. I checked the earliest backup we do have, but your was already griefed there.
You can compile a list of important things that were griefed/stolen and have them refunded though.
Sadly we don't have a backup of the time specified. As such we cannot roll your claim back.
You can create a list of things you had in the chest for a refund. It's not perfect but it's our best option at the moment.
Hey, if that happens again you can simply use the free unstuck package to teleport yourself to spawn https://craftersland.buycraft.net/category/1347141.