I am trying to upgrade to Mocha 2020 on a Mac running OSX10.13.6. My license is valid through April 2020, and should work.
So I downloaded the installer from BFX, installed Mocha 2020, fired up AE2018 and tried to use Mocha Pro plugin. I know that the install was successful since if I click the About link for the plugin I see this window:
However when I attempt to license the plugin it says this:
To be clear: I DO NOT HAVE MOCHA INSTALLED ON ANY OTHER MAC OR PC.
So it is impossible for me to “uninstall from another machine and try again.”
For licensing help, your best option is to submit a support case here, or simply go to the Boris FX homepage and click on the graphic on the lower right part of your screen to chat with a support rep. They should be able to help resolve the license issue.