I looked into this a bit today and don’t have the solution, but can show you lots of DNS errors here: https://dnsviz.net/d/huwelijkspeech.nl/dnssec/
What I think might be happening is that your registrar uses NS1 for DNS. NS1 is also our DNS partner, and I’m guessing something is getting tangled during the nameserver delegation since we both use NS1.
If you’re open to keeping DNS at your registrar, we would expect that to work well- you would do the following for that:
- delete the DNS zone on the Netlify side
- create an A record at your registrar pointing your bare domain to our load balancer, 126.96.36.199
- create a CNAME at your registrar pointing any subdomains to your Netlify URL
But I’ll also leave this open for one of my colleagues to take a look at when they’re back in the (virtual) office next week in case there might be a way to get Netlify DNS working for you.