de domains

Hello Everyone, I am looking for SEO tips for my sites, e.g. link building, content optimization and writing. I will be grateful to the forum participants for advice and help. And I will also be happy to share my own knowledge. Also am looking for cooperation with SEO pros in the German market.

I just transferred a .de domain on internetbs. It asked me on the whois data to enter address from Germany. It's mandatory because of some regulation. I don't have a German address..I don't live in Germany! What should I do? I put there a fake one...but from what I read in Terms and...