HI ​@Steffen Kueller,

Thanks for reporting this! To better understand what's happening, could you share a screenshot or a short video of the issue? This will help identify if there are any visible errors or patterns causing the export failure.

In the meantime, here are some quick troubleshooting steps you can try:
Test in an incognito window to rule out browser-related issues
Clear your cache and cookies and try again
Switch to a different browser or the Miro desktop app

If the issue persists, let me know.