Can you provide a bit more information to help suggest some things to try:-

Was the Myghl working when you had your previous router?
Do you have the ability to access your profilux from your home PC using the GHL app?
Do you have the ability to access the profilux web page from within your home network or outside your home? i.e using the internal IP address or DNS name?
You say you have the App working on your Iphone, is this using an internal IP address (only work at home) or does it work outside your home?

One thing you can do to rule out if its a network issue or a Myghl issue is run a long ethernet cable from your profilux into the back of your router (if you have a long enough cable).