Thanks for the video, as I see this is a Prezi Next presentation and I don’t see a reason why the buttons should not work. Can you check my comment above and try the presentation in an Incognito window? This should help rule out a few things that can cause this issue.
You can also try to edit your presentation in a different browser, and let me know how that works out.
This would be the first step in the troubleshooting.
Hi @Lisa_Lin, you should be able to copy a Classic presentation from your dashboard when you are trying to edit the presentation. It should offer you to make a copy in Prezi Next. Could you tell me what is happening exactly if you are trying to edit a presentation?
Can you also send a link to one of the Classic presentations you are having issues with?