The certificate add-on doesn’t think dozent is installed, and I have a full-fledged course set up in dozent just fine and now being sold through woocommerce. This is all on a subsite of a multi-site system, but dozent and the certificate add-on were only activated on the desired subsite.

in order to work Dozent LMS Certificate properly, you must need to install the Dozent LMS Core plugin.