The duplicates are coming from your custom CSS. Depending on how extensive your CSS customizations are, you can either edit your custom CSS file to remove the extra icons or you can switch to the default version shipped with the plugin.
To switch to the core plugin styles, go to My Calendar > Design and in the “Select Theme” dropdown, switch to twentytwentytwo.css in the “Installed Stylesheets” section.
Looking at your site, I don’t think you have a lot of customizations in the custom file; it’s hard to tell, however, because the CSS is compressed using Autoptimize.
pro-tip; you can usually also disable Autoptimize on a per-request basis by adding ?ao_noptirocket=1 to the URL.
hope this helps debugging,
frank (ao dev)
Ok, thanks for help. I think I repaired that 🙂
