How to shift the theme license to another ID

Hello, I just want to know that my developer bought a theme on theme forest,theme is journal .whenever the journal theme gives support the new version ,then i ve to contact the developer to download the support and email me its very hectic to do this practice, sometimes he is not available .kindly give me solution how to access my theme or move the license to another id.
i purchased a theme through developer. he is ready to move the license to my id .

The developer can give you the license to ‘use’ the theme but downloading will only ever be available from the purchase account and cannot be moved.