Infuse 4.x and QNAP issues

I have read through these forums and have tried almost all of the fixes but still cannot get the Infuse app to connect to my QNAP TVS-471 NAS remotely. Local Network works perfectly and I can stream my files on both my iphone app and my appletv.

The issue lies in connecting to my NAS from outside the network. I have tried port forwarding all suggested ports, I’ve tested to see if my router is forwarding correctly and have triedall means of connecting (SMB, SFTP, FTP, WebDAV). I still cannot connect to my server. I can connect to my server home page via web browser and even my plex app works perfectly but not my infuse app! PLEASE HELP!