Could not provision Let's Encrypt certificate — DNS correct for 48h+, no Renew button visible

Domain: studio-bartel.de
Site: dulcet-kataifi-a7e18e.netlify.app

DNS is fully delegated to Netlify DNS (dns1–4.p03.nsone.net), verified correct via dig/whatsmydns for 48+ hours. No CAA records blocking. Certificate provisioning still shows “We could not provision a Let’s Encrypt certificate for your custom domain.” The “Renew certificate” button does not appear under Domain management > HTTPS. Could you please manually trigger certificate provisioning for this domain?

Thank you for your help!

Many greetings

Noah