Hmmm, that is strange - although I did notice that this plugin hasn't been updated in a while.
Perhaps it could have something to do with the LearnDash 3.0 Template they mention here? https://www.learndash.com/support/docs/add-ons/compatibility/#elementor_integration
I do not use LearnDash myself, so I'm not that familiar with how it works.
Edit: The last update was in January this year, although it also mentions requiring Elementor PRO in order to be compatible.
Perhaps it could have something to do with the LearnDash 3.0 Template they mention here? https://www.learndash.com/support/docs/add-ons/compatibility/#elementor_integration
I do not use LearnDash myself, so I'm not that familiar with how it works.
Edit: The last update was in January this year, although it also mentions requiring Elementor PRO in order to be compatible.