I had the same problem. I searched for it on google and came here. The solution of disabling the automatic port selection worked. So, in the first place I just came here to thank you.
Although it is still weird that the dashboard was accessible while the cloudbox was still attached to a router. And other devices (such as mediaplayers) could still acces the cloudbox, my computer could not. The reason this feature of automatic port selection was enabled, was because I wanted to acces the cloudbox from an extern location. So I would like to ask you, how can I acces it from an extern location, without not being able to acces the cloudbox on my computer?