One PDFelement license (personal license) can be used on two computers at the same time.
If you want to log in PDFelement on the 3rd computer, the software will remind you to upgrade or unbind one of your devices. You can log in to the account center to manage and unbind devices.
If you want to use the license on more devices, we recommend you purchase the team or business license. (Remember to select the correct platform to check.)