If you need license key for Testing/ Staging/ Development environment. You just need to login your account: http://landofcoder.com/downloadable/customer/products/. Then, insert Testing Domains together with the production domain. Please don't not forget to separate them by comma.
In this section, you need to clearly mark url as testing subdomain such as "test.url.com" or "staging.eurl.com" or "dev.url.com". It is necessary for us to see clearly that it is your product domain or testing domain. Then you will get the key/code that you can use for all of theme( testing domain & production domain)
One edition can be installed on one single backend domain. For example, you have multiple stores but they have the same backend domain, you can use one edition for them.
After payment process is successful, please login to http://landofcoder.com/downloadable/customer/products. Then, input production domain and dev domain according the purchased package
After purchasing, you can install extension on unlimited test/development sites.
We have the intention to use some free extensions of your to create a commercial theme that we will sell on site and ThemeForest. Is it possible
We are so sorry to say that unfortunately, you can't use our free extensions for commercial purposes. It is free single license only. For the commercial purpose or multiple usages, you need to purchase the license for that. Please feel free to contact us if you have any question