A license can be transferred only if the account itself is being transferred to the new owner, and this would have to come to us in the form of an emailed request from the existing account holder. He cannot however transfer a license or on-sell it in any other way. If the account has both themes attached to it, then the new account holder would have both licenses as a result of the change.
The best idea would be for the developer to
email us to explain what they wish to do, and we can check the account and clarify further once we've had a chance to look at it.
Our plan is for all themes to be responsive by the end of this year/early next year. It is under way as we speak, so isn't too far away. Thanks.