Purchase code for sites with staging/dev/production environments

Using Uncode theme. Is it possible to use the same purchase code for 3 instances of the same site? Client works on staging/dev at WP Engine and wants to update plugins on staging/dev instances before deploying to production. They’re getting “you have exceeded the maximum number of activations permitted for a single Purchase Code” error. Any way around this?

before migration to production site must need to unregister the license from the staging/dev site. without unregister the already used purchased code you will not be able to use the code again. If you have any issue as like not have access staging/dev site. then you have to contact the theme author for getting their support to fix the license.

How to contact an author to get support or for any technical query: