I know this topic is in german but im having exactly the same problem and so are my friends, i did make a post about this. we are able to access the forums via proxy but this is the only way currently. We have never been banned or anything, it suddenly all went down for us around 3 days ago now. I tried a different browser, and changing proxy settings in the browsers but it doesnt change anything, we can all only access it via a proxy and its getting frustrating