Guild Wars 2

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I keep on getting the same error over and over again if i wanna try sell something on the trading post. I tryed everything to fix it restarting guild wars 2, restarting my pc and nothing works. I got this error since yesterday

Help me out if can ASAP!

any1 got suggestions how to fix this?

I know this is a REALLY late response, but I had the same problem as well today. It seems to be an anti-botting countermeasure. Just sell things more slowly and you should be fine.

Thing is, I haven’t sold a single thing today, yet I still cannot sell, nor view any information in the sell box which pops up when you select an item. o.o