For some time now the website was being managed almost automatically. Without any kind of update. Exactly when speculation began about the ban on the Chinese market, the site stopped updating some of its functions. And now there seems to be some simple problem, but since no one is managing, no one has fixed it yet.
It is difficult to abandon the habit of visiting bitcoinwisdom. It is a simple site, which takes up little memory and requires few resources of the computers. Most other sites offer several features, but most of the time, they are unnecessary features.
But as it happened with preev, they must correct the defect and the site will re-operate correctly in a few days. Meanwhile, tradingview, with bitstamp graphics, and
https://cryptowat.ch seem to me to be the best alternatives.