bit of a strange one.....you do have a M$ Account / Hotmail setup right? I am not an Apple guy so can't really help just wanted to point out I am using the C7 V2 Beta Firmware here , even though I...

So you have 4 C7's ? You aren't using the Wan Port on the 3 APs are you? .......shouldn't be... just the 1st C7 off the Cable Modem , http://www.tp-link.com/ca/faq-608.html Also I believe they should...

I always try it but it doesn't always work , especially if a big jump in FW build.... Take screen pics of the web interface setup pages instead..... Windows Snipping Tool ( in Accessories) is handy...

Its for D7 V1's that use the European model Firmware ( incl . OZ ) ....you don't give ANY info in your post so kinda hard to help..... Try installing the latest Official Firmware 1st for your region...

Depending on the hardware versions there is a beta firmware for version 2 here...

There is a Beta firmware for version 2 as well , which seems better for me , not sure if it will help your Eth. issues though (can't test as my service is only 25/25 which i get)...