Issues with Safari (and Firefox) on mac / iOs

Hello,

in Safari on Mac, version 14, the callout logo does not show up. I converted the pic into WebP format, but this should be supported by Safari 14. Additionally, the logo shows up when surfing on iOS with Safari. The logo is also shown in any other browser I have used (Edge on Windows, Chrome on Windows&Mac, Firefox on Windows/iOS, etc)

Additionally, when I use Safari on iOS, the menu is not clickable. The same issue happens with Safari and Firefox Focus on the mobile and the iPad.
It works okay with MS Edge on iOS.

Also, the icons of the author/date/comments, and surprise recipe in the menu do not show up in Safari / Firefox focus on mobile, but only in Edge.

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