Model : Hardware Version : Firmware Version : ISP : http://static.tp-link.com/TL-PA9020P%20KIT_V1_170628.zip

Upgrade to 3.2.4 firmware.

9020 devices don't have a login box!

The answer would more likely depend on how many cameras / what resolution and capture rate - i.e. how total much bandwidth you are going to need. If cost is not an issue best to get the fastest (9020...

Just connect to the WiFi and goto http://tplinkwifi.net/ As it tells you in the instructions!

The fastest way to get support in the UK seems to be to post a negative review on Amazon! Whilst I have never seen any support given by TP-Link on these support forums they seem to check and respond...