After having some problems with the old forum, we took the chance and implemented a new hopefully better one. Please do not be astonished if the old web address and the old links are not working any more. 😉
Harmonieman is configuring the new forum right now. Maybe that is why not everything is working fine at the moment, but you should be able to post. 
Please contact Harmonieman if you have serious problems with the new forum!
(Translation by Kai-Li)