That doesn't seem to be open source? Their home page [1] has lots of stuff about pricing, sales, requesting quotes, etc., and their GitHub [2] has lots of forks of open source projects but not a main LMS project as far as I could see. It also isn't clear it's an LMS itself, as it has a use case example "Extending your LMS's capabilities", and the pricing page has an "LMS Integration" enterprise feature: "Integration to the Learning Management System (LMS) you're using. We support all major LMS's."
Correct, we are not open source (I am the CEO). But if that is not a hard requirement, then I do actually think we offer a lot of the things mentioned in the post.
[1] https://www.eduflow.com/
[2] https://github.com/orgs/eduflow/repositories