I have a client who is using the enfold theme. He needs to update his theme without contacting the person who purchased and installed the theme. Is it possible to buy a new licence and update the theme with the new license account?
yes possible to update the theme with new license and for this if the theme already registered/license activated then have to deregister old license and have to register new license, but if the theme your client using is very old version then may be some compatibility issues may occur. If you are more interested you can ask this to theme author going through theme details page then comments page and post your query about the possibility because I don’t know your client website current theme version and updated log.