Yes, the engine is running. I can see (Service already running) in the terminal.
I tested a scheduled script that does not use the plugin and it's OK.
The FM function Get ( InstalledFMPlugins ) returns nothing (empty).
All plugin functions return "?" (EmailConnectSMTP, EmailCreate, EmailLastError, EmailRegister).
I purchased an Enterprise license, but maybe we got a license number for a single-user version?