Hi ​@Alphalex Consulting,
 

I understand you're having trouble adding a custom domain to your published site using Figma Make, even though you're on the Professional plan.

I checked on my end, and it looks like you currently have access to both a Professional plan team and a free Starter plan team.

To cover the basics first, could you please double-check that the published file is located in your Professional team?

• You can switch between teams in your file browser. This guide shows you how: Guide to the file browser > Your sidebar
• If the file is currently in your Starter team and you’d like to move it to your Professional team, please follow the steps in this article: Move a file

If you've confirmed that the file is already in your Professional team and you're still seeing the same error, please share:

• The URL of the file

• A screenshot of the error, including the full Figma screen

This will help us better understand what you're seeing and assist you more effectively.

Thanks!

Note: I’ve gone ahead and created a new topic for your question, since the one you originally posted in was discussing a slightly different issue. This should help avoid confusion.