Org-learn failing to update calendar scheduling

I installed the plugin org-learn for my Emacs (latest version, latest org-mode as well). The plugins no longer actively maintained nor does it need to be, it does a select few things and doesn't need to be updated. The org-learn module I used is attached to this email, here

Backwards compatability

Hi, I recently posted to the help-gnu-emacs mailing list about using the org-mode package "org-drill" and its long-term viability considering that it is no longer actively maintained - you can see the thread [here](https://lists.gnu.org/archive/html/help-gnu-emacs/2021-04/msg00230.html). The resp