I noticed a drop in sales from my guild trader. My items were not selling. I checked my listings at a bank and the items were listed in the guild store correctly. I then checked my listings at the guild trader directly and some of them that were showing up at the bank, were not listed with the trader. Others were.
I removed the missing items from my listing while at the bank. I then re-listed them directly with the guild trader at the trader's location. Going to check in a day or so to see if this helped. This is on the PS4 NA Server.
Not sure if anyone else is having this problem, but you may want to check.