So I apologize if this has been mentioned (I've searched and searched! These forums and googling all around!) or is a simple setting I've missed somewhere, but, I can not seem to get the app to connect when on anything other a WiFi connection.

It will work on my local network, as long as my phone is connected by WiFi and it will work on my work network, as long as the phone is connected by WiFi.. But the second I'm on LTE or HSPA, I can only access the login screen of the app. Any idea what's going on here? I'm happy to set up manual port forwarding on my host machine if necessary, but I was/am working under the impression that the my.jdownloader is taking care of forwarding/DNS issues.

Thank you all in advance for any help, and for the useful software!