I’ve seen old topics about this, but they all died without solutions, and the majority of people said it was never fixed for them.
I am encountering greyed out buy/place order buttons, a blank page when I attempt to sell anything, and it shows me having the amount of “. ..” gems (in the BLT, my bags show the proper amount).
I used to simply log out and back in to fix this issue, worked every time, no wait time as others had said was needed for them. This lasted for about a month I’d say.
Suddenly, last night, relogging no longer fixed this. This wouldn’t be so bad if we could actually trade with other players, and had some sort of trade chat across all main cities, but anet is restricting us to a broken system. This is highly frustrating.