Embedded video - continue button issue

Hey all!

I have embedded a video from a website (Vimeo - with disabled play bar) into a slide in Storyline. The actual video is about 16.25 mins long, but shows up on the timeline as 5 s. I would like a continue button to appear at about 16 mins, but can't seem to get it to work. I've tried adjusting the timeline to 16.5 mins and then delaying the button to 960s. I've tried putting it on another layer and then triggering the layer to show when the media completes. And a couple of other things. Nothing seems to be working :(

Help!!!!

Any suggestions?