Hi Tom,
the site is https://baubiologie-brida.de
I’m getting the following errors in chrome devtools:
Mixed Content: The page at 'https://baubiologie-brida.de/' was loaded over HTTPS, but requested an insecure font 'http://fonts.gstatic.com/s/ptsans/v8/lILlYDvubYemzYzN7GbLkInF5uFdDttMLvmWuJdhhgs.ttf'. This request has been blocked; the content must be served over HTTPS.
And also a warning sign (shield)