A family of Microsoft presentation graphics products that offer tools for creating presentations and adding graphic effects like multimedia objects and special effects with text.
I had the same issue, this workaround fixed it for me.
I clicked "share" then "embed"
I left all the settings the same (how they were already selected but you can do the "start at" option like with the usual method)
Click "Copy"
Then I pasted that code where you would put the video url as normal in powerpoint when you go to add an online video
