Please dismiss my other issue about the speed, it seems to have become better. However, a new problem is that pages (for example the route management page after pressing "choose aircraft" or "add flights") simply doesn't load completely. I only get this:
After reloading all input has been lost, so that I cannot select an aircraft. If I have added a route, however, the route has actually been created. Reloading via F5 does not work.