OGS front-end doesn't render properly in many systems

Thanks for the quick reply. I just tried again the different browsers, and most of the problems seem to appear in iOS, namely iOS 7.1.2. with both safari and chrome. In both browsers I get a tiny goban, as seen in my previews post:

In the laptop (running OS Lion) everything seems to work fine in firefox, but with safari often parts of the interface are overlapping, and the page takes quite a long time to load… But it works somehow (A week ago or so it was much worse).