2101- Summa Mac Plug-in for Illustrator CC 2018 & higher rev 1.2.0
Since the release of Illustrator CC 2021 (version 25.1), the plug-ins (Summa Mac Plug-in & MacSign Plug-in) were no longer working. New versions are released to resolve this problem.
New MacSign Plug-in and Summa Mac Plugin are available on the Summa Website: