Watermark does not disappear even after the suggested solution of deleting and reinstalling the player and pro plugin.
I deeply apologize for the misleading information. The system around staging domain licencing can get quite confusing.
Since the staging domain is a sub-domain of your main domain, it is actually licenced under the same key as the main domain. Replace the key with the main domain key starting with $3, not with $6.
Let me know, if it solved the issue.
the chapter display is not affected by license. Please post the link where we can see the issue.
Or you can open your browser developer console (here’s how https://kb.mailster.co/how-can-i-open-the-browsers-console/), then load the page with your video with chapters again and see if you see any errors on the console. They might appear right on page load or after you play the video.
The chapter markers are generated with FCP X.