Also go into network settings, advanced then do mac address clone and then you should see an option to reset network settings if you do that it could help.
In your router you should have an option called DMZ which exposes all ports for a specific ip. Or there should be an option to select a device and have all the ports opened to it.
Also make sure to clear all the port forwarded things if doing dmz or selecting device to be exposed. Know that only one ip can have one specific port open, you can't forward port 80 to eg. 192.168.1.101 and to 192.168.1.103
This is why people love Linksys as it makes all these things very simple and easy to do
How do you get "in" your router. I don't see it on my pc. Are you referring to the in browser online set up site? I tried going to mine, but it never loaded