Hi Scott,
Thanks for reaching out.
Use Any Font stores its generated CSS in the following file:
wp-content/uploads/useanyfont/uaf.css
Once the plugin is deactivated, this CSS file is not enqueued or loaded by the plugin anymore.
If you’re still seeing the @font-face rule being output, it is most likely coming from one of the following:
A caching plugin or server-side cache serving an old cached version
A page builder or theme that had the font assigned earlier and saved the CSS internally
I’d recommend clearing all caches and from builder if you have assign using it.
Best regards,