Dear @Janina
Happy to hear the font issue is solved, as for the Intro:
Ive tested mouse clicking the intro & its working for Chrome, Safari & Firefox (also working for you). So we can assume the Bug isolated to your Client.
Why this may be?
Have they check in an incognito window?
Are they using a different Browser?
Unfortunately with this one Janina it may be difficult for me to fix if i can recreate the Bug and it only occurs on her computer and no one else. My first thought is her Browser Cache, let me know how you go & i will see if i can help further π
Best wishes
Richard