Cant use Merchant tab

https://imgur.com/a/97wdmLU

I got 1 Merchant tab purchased and I cant no longer add items for sale as in picture above. There is random guy in my hideout afk for hours now, maybe thats what stoping me from using my tab.

I think I tried everything :

closed, opened game 10+ times.

Removed few items from merchant tab.

Ran 10+ maps.

Refreshed instance many times.

Changed servers.

Used Faustus currency exchange service.

(Earnings, remove only tab is empty)

I dont get it, I purchased my merchant tab with real money and it somehow lost its functionality. Is there any way to fix this bug? why is it even in the ingame shop if I am unable to use it?!

Same thing just happened to me after I sold a few items