Matomo can't find Tracking Code


I installed Matomo for the second time. The first time everything worked fine.
Now I installed Matomo (Self-Hosted) like the first time and also added the tracking code.
But currently Matomo shows no data and also doesn’t check the goal “Embed Tracking Goal”.
The site of interest is: Also there is the tracking code shown in the source code.

Thanks for your help in advance!

Greetings Mary