Trading post - available coins not increasing
The items and gold that is available to be picked up seem to share their entry cap, by this I mean when your available items have filled out all the entry slots, the gold stops coming in until you pick up your items.
When an entry slot is still open you can still receive as much gold as you possibly can.
It works odd… I’ve had this problem in the past a lot, but always made sure I got all my expected gold from the TP.
Also when you receive/buy items when your entry slots are full, they will automatically pop on your available item’s list after the next pick up (Just like with full mailbox)