Remote function does not work

Hi there
After changing my provider, I had to setup my new router. I forwarded the port 23424 TCP to the local IP adress of my server and also setup my DDNS. Somehow, i can't reach the mediabrowser. Does anyone have a clue, what the problem could be? Serviio says that remote access is active.
Greets

[atc98092]

That's all I have set on mine. Without divulging your DDNS name, what URL are you using to connect from outside the Internet? It should be http://DDNS_Name:23424/MediaBrowser