I am not able to deposit items in my shop because it says

Trade Offer Rejected
Shop item limit reached

in the lower right corner of the screen (chrome extention)
My shop has 18/50 items and is not full.

Please fix this asap!

Also I get this when i open my shop. My shop was full but then i withdrew items but now it doesnt seem to recognise that the shop is under the limit now. :/

SHOP IS FULL!
Your shop inventory is full! Your shop will be hidden from the front page and search results until the item count falls back below the limit. Please consider withdrawing some items.

The error got fixed a while back but now my shop was full again and the same thing is happening.