Slide layer does not open after timeline reaches cue point

Hello everyone,
I have a question. For a storyline project I'm working on an interactive video. I want a slide layer to open with a question when the timeline reaches a certain time. I have added a cue point (as you can see in the picture below). However when testing the slide layer does not open when the timeline reaches the cue point and I don't understand why.

When I was building I tested with a cue point around 0.02 and everything worked fine. But now with this new cue point it doesn't work anymore.

Anyone has an idea what I can do about this?

Thank you for thinking along:) 

Eline