Kavana theme fonts look different in android browser

My setting:

1. WordPress 6.4.3
2. Gutenverse 1.9.0
3. Kavana 1.0.1
4. Do you install/activate Gutenberg plugin? no
5. Plugins
   Gutenverse 1.9.0
   Limit Login Attempts Reloaded 2.26.6
   Local Google Fonts 0.22.0
   Smart Custom 404 error page [404page] 11.4.4
   WP Mail SMTP 3.11.1
6. The issue happened right after installation and still lasts.
7. I have a live site, but the issue also occurs on the demo page of the theme itself : https://gutenverse.com/demo?name=kavana
8. Screenshot: https://postimg.cc/N25FWZLn

If you call up https://gutenverse.com/demo?name=kavana with a browser (both Firefox and Chrome-based browsers), a sans-serif font appears instead of the Eb Garamond font that is actually provided in the theme. Both on the desktop under different operating systems and browsers, as well as on an iPad or an iPhone with Safari, the font is displayed as intended with Eb Garamond.
I also have a live site, but since the issue also occurs on the demo page of the theme itself, I assume that it is a bug in the theme. Unfortunately my css skills are not so good that I could solve the problem myself.

The page I need help with: [log in to see the link]