Good well done! Some people find that confusing but you've done really well. can you do a small test for me: Bug Report instructions & sample image And tellus whether your result is True/False? If it's false then can you have a very a close look at your modem & find out the modem model name & number? It could be on top or on the side or bottom of the box.

You see modems & routers that are used for adsl or dsl commonly use what's known as NAT shich is very similar to a firewall in theat they block port openings that LW needs. So we would need to allow LW access in a similar method to your firewall.