Hi there @Yana, 

Welcome to the Community! Sorry to hear you’re having font upload issues, happy to help! 

In my experience, when you see the error message, "One or more font files could not be accessed.", this usually means CORs hasn't been enabled yet. When setting up custom fonts, you'll want to make sure to enable Cross-Origin Resource Sharing (CORS) by setting the Access-Control-Allow-Origin header to *, so the font can be accessed by your recipients’ inboxes. It's likely the font cannot be accessed because the Referrer Policy for fonts hosted is strict-origin-when-cross-origin
 
I’d recommend following this documentation on how to change your referrer policy so you can upload this font successfully!

 
If you’re not comfortable with this kind of coding, you might want to work with your development team to implement this.

Thanks for participating in the Community!

-Taylor
 

Hi Taylor, 

thank you so much for your help!
I’ll try it, hopefully this was the problem! :) 

Thank you 
Diana

 

Set it where?

Edit: For me, my issue was using woff2. It accepted woff no problem.