Auto play of vimeo videos

Hello.

I used to have success with the above code for autoplaying vimeo videos, but not anymore.

Until very recently, I successfully made Vimeo videos autoplay when they are embedded into Storyline by adding ?autoplay=1 after the video ID like this: (which is how I believe the file Alyssa Gomez attached above works as well):

<iframe src="https://player.vimeo.com/video/267295311?autoplay=1" width="999" height="562" frameborder="0" allowfullscreen=""></iframe>

For some reason, this has stopped working. The video appears to want to autoplay because the pause button is activated, but you have to click the pause button and then click play to make the video play.

Does anyone have any idea what might have changed that using the code above no longer works to autoplay and if there's anything else I can do?

Vimeo instructs you to click Share on your video > Show Options > Select Autoplay. Then get the embed code. That has never worked for me, but the above has… up until now.

Any help would be greatly appreciated. We have several courses that pull in Vimeo videos like this on our LMS.

Thank you!