I lost all my stuff i had listed all gone

[Reddevil Rodex]

all my gatchas i had listed has all vanished all folders are there but the inventory is gone and was not sold over 50 listings

[Jax Leeder]

Have you done a search in your inventory - once you list an item (especially a no copy one) then it is moved to a new location within your inventory.

[LittleMe Jewell]

6 hours ago, Reddevil Rodex said:

all my gatchas i had listed has all vanished all folders are there but the inventory is gone and was not sold over 50 listings

Which viewer do you use?  Download another one and see if your inventory is shown in that viewer. Then go through the steps in this article to see if you can fix the issue:

https://wiki.firestormviewer.org/fs_missing_inventory

Edited April 7, 2021 by LittleMe Jewell

[Charlotte Bartlett]

they may mean their Marketplace - their store is fully empty when you look at the website. If so I would raise a support ticket as well.
Not sure when you last logged on there was something if it was x years from memory they would clear down your store if no sales - not sure if that applies in your case.