Faustus Shop - cannot add items

yes same issue and it is blocked by another player who stay in my hideout probably after the trade happends and do not close the shop currently he stay there more then hour.

Unfortunately I am not able to create new instance of my hideout using CTRL

Also the server change do not help either because game hold your Hideout instance.

Only solution what helps me was swap hideout. It looks like focibly close the instance of your current hideout and you are able to use shop again.