Did you click Save Settings after filling the fields? If yes, and still have problem to access your wan ip, I'm afraid your ports are not blocked at all, but your internet already routed which can't be rerout again. In other words, imagine you have 2 routers before wamp computer, then you need to forward port from router1 to router2, and router2 to wamp computer; in this situation, your LInksy is router2 and you don't have any privilege to setup port forward on router1 which is located at your isp :-(
You can try to contact your isp to straighten it out, but NEVER mention about webserver, but you can convince them w/ something like Sling Media. Good luck
Have fun,
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