Finweet CMS slider not working

I’m using Finsweets cms slider attributes and it’s just working sometimes!

Presentasjoner Template contains a slider.
It also has a collection list with the elements going into that slider. Just some RT and an image.
And I have followed the instructions.

When I publish, the slider gets the data from the collection list just some of the times.
Seems totally random when and how often.
When I refresh it often just show the first slide, and just one dot.
Suggestions?

Test-page

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