Hi @AineP, I'm sorry that you're having problems when trying to upload content to your course. This could be happening if your course is currently set as ''Free'' since instructors can only add under 2h of video content on free courses. If this isn't the case, I would recommend checking our support article: How to Add Sections, Lectures, and Video Content to Your Course. If you are still having issues after this, the best thing to do is reach out to instructorsupport@udemy.com with more details about the problem and, if possible, screenshots of what you're seeing on your side so they can take a closer look for you!
Bella Almeida
Udemy Community
