Hardware version and firmware version of your SG3210? Reset and reconfigure it? Report it here if you have tried. http://www.tp-link.com/en/Support/contact/

kScope wrote Another disappointed customer here. I have tried all the suggestions in this thread with no success. I have noticed that usually the problem happens when I am using some household...

Did you pair your powerline adapters? Which indicator is on when your power them on? http://www.tp-link.com/en/article/?faqid=258

Since the modem is in bridge mode, if the router supports IPv6, you should be able to connect to IPv6 service. Are you sure your ISP is providing IPv6 service? With modem connected directly to your...

Well, there is limitation of couse and it depends on chipset of the device itself. :) But since there is an ISP software to moniter it, that's quite good...

According to TP-LINK people's answer, can you use support/support to access it remotely? Maybe you wait for the new firmware to release and see how it goes.