Haha,dude, vlan1 is the default vlan for management. You cannot remove it.

Hi thecode. As you said the PSE decides whether power mode A or B, however, the TL-POE10R is not a PSE or a PD. It's just a splitter. So for the splitter, we cannot say it support which mode, right?

Have you ever double check your configuration on VPN ? Have you enable the Ipsec? http://www.tp-link.com/en/faq-444.html

What's your topology look like?Can your device get IP by ipconfig /renew?

About your case, i suppose you should contact the Support for help.

The app's update is more frequent than the router. The latest firmware of ER5120 is 140212. Obviously can not catch up with the App.