Sadly, if it has been 20 days it probably can no longer be restored.
Structures are deleted after 15 days of inactivity. The backups to restore them are only kept for 3 days after that. So after 18+ days it usually can no longer be restored.
You lost 4 structures and made 4 tickets @Mike
You can also use the “comma” , button to mention multiple structures in that line here.
The first structure was restored for free but since so many are gone we have to apply our limit rule.
I restored your Carman Space for the common fee.
Have fun