Mini tutorial project not working

Hi, I’ve been following this mini project in Figma

When I come to do the final step, the component set does not animate in present mode as shown by the tutorial. It does in preview and in flow. I have gone through all the steps a couple of times, and even started again from scratch. I cannot see where I have gone wrong and why it is not working in present mode.
Help would be appreciated. I am new to Figma, and had managed to do the other projects so far spotting mistakes and adjusting. But I’m at a loss here unless there’s something missing in the tutorial