If your problem still exists, please contact the TP-LINK supporter for help directly.

They are both good. But I prefer TL-R470T+, it looks smaller.

In this situation, you cannot use the Loadbalance Router.

You can check your settings referring to the FAQ in the below: http://www.tp-link.com/en/faq-385.html If your problem still exists, why not contact with their supporter directly for help?

Go to Maintenance--Admin setup--Remote Management, and then designate the IP address in the blank and the mask should be 32 and then enable the rule. You should delete all the other rules if you want...