Ok I just watched your video & one thing I saw was that after you'd set up rules within your router & gone back to LW's firewall config page...your listening port & manually forwarded port were not the same. You still had port 6346 as the port forwarded. That won't work. Both listening port & manually forwarded port must be the same, so make sure both are 13616.

Also saw that you only had 1 DNS server rather than 2...I'm not sure if that's going to matter when setting up a static IP or not.
Maybe someone else here could answer that for me???