can i install it on my test subdomain and dev subdomain site ?

hi,


when i purchased the product, it was said it is only one by website.

my website is like that :
www.mywebite.com
test.mywebsite.com
dev.mywebsite.com
test.mywebsite.fr
test.mywebsite.it

so, can i install the product in each website (test, dev and multi langue) ?
during my test, i can't disable the old menu while i'm configuring your megamenu and having both online in the real time is confusing for visitors (they may think the website is broken)....

Once i purchased the product, where i can tell you the domain concerned ? i can't find any license id in account or module configurator.

Best regards