Have you opened up a Support ticket yet? http://support.envato.com/ If you haven’t, please be as detailed and specific as possible. Thanks!
Why don’t you just pass over this problem to the staff? Envato should want to fix this issue as soon as possible in their own interest.
I am also not sure which details you need? Just open a bunch of items and you will see that the pricing box does not load.
You have to buy one license per installation.
What do you want to tell us with this picture?
No. A extended license does not allow you to use it in multiple installs.
You just need single licenses. If you install it on 2 domains you need 2 of them. For 3 domains you need 3.
The extended license is only for developers who want to use the product in their own product (to sell it), or if you want to charge your end users something.
It’s to hard to read, in my oppinion.