I have been made aware of an issue where the request for permissions to Reminders is not working on 12.7.6. The user was kind enough to let me look at his setup remotely, and this is a new issue I have not experienced.
My goal was to reach as many versions of the OS out in the wild, so 12.x was the target. I am working on a potential fix to make this work and will update this post/topic once a fix is available.