I am trying to link a page running on my local machine to my reserved domain name, but it does not seem to get picked up. I have installed nginx on an ubuntu 18.04 machine. I have a simple hello world...

I know thats not the kind of question that are commonly asked in here, but I don't know where to ask instead. I want to setup DynDNS with my FritzBox 6600 Cable, but i always got an 500 - notfqdn (not...