No – DesignPro was Windows-only. Mac users should use Avery Design & Print Online or third-party software like Canva.
Avery DesignPro 5.5 is discontinued software. Avery officially ended support for DesignPro (all versions) several years ago. The software was a 32-bit application designed for Windows XP/Vista/7 and early versions of Windows 10. Avery Design Pro 5.5 Download
Extremely unlikely. The installer will probably fail, and if it installs, printing and preview will be broken. No – DesignPro was Windows-only
Avery has replaced it with Avery Design & Print (a free, cloud-based online tool) and Avery Design & Print for Desktop (a modern Windows app from the Microsoft Store). and if it installs