Licence keys are bound to the billing information that purchased them, and there isn’t a way around that restriction currently.
https://discourse.cubecoders.com/t/regional-availability/21718
See these two notes however:
Note that this does not apply to transactions made via Patreon - users in affected areas may wish to use Patreon to purchase AMP licences and avoid these restrictions.
Users in these areas will not be able to purchase AMP or other CubeCoders software/services at this time. We are working on enabling gifting so that someone in a supported region can make the purchase on their behalf.