I just replaced my wireless G routers to the new wireless N routers (TP-Link). And now I can't access some websites like yahoo mail, citibank site, and a lot of other websites.

I can't also connect to the appstore using my iphone, ipad and ipod touch. At first I thought there was something wrong with my apple account, but when I tried it in a public wifi hotspot, I was able to connect and download/update apps from the appstore.

Here's the setup of my network:

Office computers === [network cable] === wifi N router 1 --- [wireless bridge] ---

--- wifi N router 2 === [network cable] === wifi G router 3 === Home computers

My ISP is Globe which is using PPPOE. I tried to use all the DNS of Globe, OpenDNS and Google's DNS, and they all result in selective browsing. Speed test came out fine, just like before.

Can the new routers cause the selective browsing problem?

And btw, my iDevices can't connect to the wifi N router 2, it always displays an error message "unable to join network", even if I disabled the wireless security.