Well, this is more a question to a donor members of HD. Is TechnodeFirmacraft server dead? I played on it for a few days, and never saw anyone else log in (well, there was a point, when someone logged in, and logged off in a couple minutes)
If it is realy dead and noone is playing on it - i would love to stop playing on it and try it out in singleplayer. Becasue dead server < singleplayer