update custom font

Hi
i am using your plugin and i love it.
i used fontello to select 4 icons, download the custom font
upload, and i see it in elementor. great.

now i remembered that i forgot some icons,
went back to fontello, add a few to the same font name
download again
delete the old one
upload the new one
and i simply don’t see the new icons in Elementor.
i clear the cache
regenerate the css
in incognito window i see that the new font with the new zip file.

how can i modify the old font, without adding new font

Thanks,
Shay