the sticker only shows the hardware version. do you see hardware version too when you login management menu? I guess it will show version 2 as well. 3.0.0 Build 170103 Rel.02853 is the firmware...

will be fixed in the next firmware

Tplink say it will be fixed in the next firmware

Yes you can edit client name. As for to use space, you can try it. There will be error message if it doesn't accept.

You can email tplink your advice.

There is orange signal light on version 5? Shouldn't it just be on or off? Don't put it too far from your router particularly when there is doors, walls and obstacles like that. Wireless signal will...