Refer to instructions here. http://www.tp-link.com/en/faq-739.html http://www.tp-link.com/en/faq-459.html

Did you follow the guide below? http://www.tp-link.com/en/faq-821.html

Email to fae@tp-link.com.cn about the problem.

WAN IP is private or public? private IP range:10.0.0.0—10.255.255.255； 172.16.0.0—172.31.255.255； 192.168.0.0—192.168.255.255 If it is private, you have to contact your ISP and confirm if you can...

Two STBs use the same PVC, right? We can add two LAN ports and the bridge interface into one group. http://www.tp-link.com/en/faq-445.html

Where did you submit the email? I always get a quick reply from their support team...