Has anyone configured the app to acces Profilux via Synology server and Time Capsule?

As the title indicates I would like to be able to configure the access to Profilux using the IPhone app. Formerly I had the access configured through a regular router and it worked. The problems came when I configured the regular router in "bridge" mode and used the Synology server and a Time Capsule as the provider of WiFi signal. I can access the Synology server from the "outside" without problems (and that is great to reach all the files I have there) but I do not know how to configure the access to Profilux. Any help would be more than welcome.

Thanks