Custom font issue

We use a custom font throughout the site.
To the logged users the source appears normally.
For some users who are not logged in, a standard Windows font appears and for others the correct font.

We did a test here and for users not connected on the cell phone, the correct source appears, and on the desktop the wrong one.

We have already tested disabling the cache and CDN plugins and it did not work

Any idea what might be going on?

I found the problem

The font file was deleted and for some reason the browser that was logged in and mobile phones were able to render the font

Thanks