Do you offer developer licenses?
Prior to the new licensing system, I offered specific developer licenses to each of my clients upon their request. This process has changed as the new licensing system will automatically grant any active license holder the ability to set up their own development environment. The way this works is that you must setup a development environment under the following conditions:
The licensing system will automatically ignore any environment that uses this naming convention. You will still have to insert your license key for validation, the key is that the domain will not count towards your activation limit. This means you could have multiple dev or staging environments if you so choose.
If you're experiencing any issues with this process, please be sure to open a support ticket.