Next button isn't working
I have a course with a 21 minute video. The menu is restricted and I have the timeline set to be the length of the video so the next button isn't clickable until that time. The course was published in our LMS and about 1/3 of our employees have completed it but some are having troubles. Without contacting them each individually, I did some troubleshooting on my own and on my PC the next button becomes clickable in Edge but not Chrome or IE (I think version 11 is what we use here). I also made sure that users weren't dragging the seekbar on the video (their leader confirmed this wasn't the case). Is there any reason why this would occur and what I could do to remedy it? I've attached the file so you can see how I have it set up.