Pay for a second device

Hello all,
I have a “PRO” (payed) license for one device (laptop).
Now I would like to use eM Client on a second laptop too, so…for two devices.
Can’t find anything about this “upgrade” in FAQ, does anybody know how to get such an upgrade ?
Thank you in advance,

Please contact me directly on gary@emclient.com with the email address you used to purchase the original license.