Used apple migration tool to transfer old macbook to new macbook, then followed instructions to sign out of all apple accounts and re-imaged old macbook for sale. On new macbook I started parallels and used activate on this mac and it worked fine but this does not work with parallels toolbox, it keeps on telling me this license is already in use and keeps on offering the activate on this mac option or buy new. Removing and re-installing parallels toolbox does not make a difference and I see no reason to remove and re-install parallels desktop as it are two independant products for else why does each of them ask for a license. I have a combined subsctiption of parallels, parallels access and parallels tools. I have removed parallels tools asI do not keep not working products on my macbook but when I pay a yearly fee I would like then products to work.