Guild Wars 2

During the past few days i noticed that the currency exchange tab in the trading post isn’t working properly. All the rest works extremely fine but it shows no diagram of the gold fluctuation, no amount of gems or gold in the upper corner. Pressing the two exchange doesn’t work as well. I included a screenshot to illustrate my problem. other guild members don’t have the issue but it showed last week.

any advice would be welcome

and it’s not a problem of loading time because I let it load for 30 mins but nothing changes

Every time I’ve had “that”(where the gems shows up as …) happen I’ve had to restart the client to “fix” it.