Auto Port Foward and URL both working, still can't connect

Hello,
Wondering if someone could help me. I'm using Subsonic now on my Windows 7 PC. Everything is set-up as far as I can tell. Network setting in my Localhost:4040 says "Successfully forwarding port 4040" and URL says "responded successfully." When I try and access it from within my network, everything works fine from any device. As soon as I leave my network, can't connect. I went to canyouseeme.org, tested port 4040 from my Subsonic PC on my network and it says "Success! I can see your service on (IP Address) on port (4040) Your ISP is no blocking port 4040"
All of the details in Localhost:4040 and canyouseeme.org seem to suggest it should be working, and it does within my network. But doesn't as soon as I leave it. Any help would be greatly appreciated.
Wondering if someone could help me. I'm using Subsonic now on my Windows 7 PC. Everything is set-up as far as I can tell. Network setting in my Localhost:4040 says "Successfully forwarding port 4040" and URL says "responded successfully." When I try and access it from within my network, everything works fine from any device. As soon as I leave my network, can't connect. I went to canyouseeme.org, tested port 4040 from my Subsonic PC on my network and it says "Success! I can see your service on (IP Address) on port (4040) Your ISP is no blocking port 4040"
All of the details in Localhost:4040 and canyouseeme.org seem to suggest it should be working, and it does within my network. But doesn't as soon as I leave it. Any help would be greatly appreciated.