To activate PluralEyes 3.5 with a PluralEyes 4 serial, follow these steps:
- Download and install PluralEyes 3.5 as a trial. You'll want to use this installer: Mac / Windows
- On the Registration page, do not enter your serial number but instead choose to install PluralEyes as a trial
- You will not be able to register PluralEyes 3.5 using a v4 serial within the installer. Only after PluralEyes 3.5.11 has been installed as trial can the program be activated.