If you are streaming live then you need to set the genres from within your stream encoder software's settings. The genre settings within your servers control panel are for only when you are using the AutoDJ feature instead.
You are on about a thread in our forum which is simply just a list of other external directories that stations can submit their stream url's to which is totally unrelated! That thread is nothing to do with our own website or the services that we offer here, so it is down to the forum community to keep it updated or list newer directories. We just do not have the time to check regularly if the directories listed in that thread are still active!