Thank you for your reply.
Yes, I installed your plugin recently and until now it actually said, that my site was not indexed. But now it doesnt show that message again. I also read that it might take some time? Could that be it?
I tried to use Ryte for further analyses as well (including google search console), but that got too complicated for my humble website skills ;). So I hope, I will find my site on google in the next days. Otherwise do you have any advice?
Thank you!
Marco