Let's Debug

Test result for blog.lublu.nl using http-01

DNSLookupFailed
Fatal
A fatal issue occurred during the DNS lookup process for blog.lublu.nl/AAAA.
DNS response for blog.lublu.nl had fatal DNSSEC issues: validation failure <blog.lublu.nl. AAAA IN>: nodata proof failed from 185.182.56.120 and 178.62.243.138
DNSLookupFailed
Fatal
A fatal issue occurred during the DNS lookup process for blog.lublu.nl/CAA.
DNS response for blog.lublu.nl had fatal DNSSEC issues: validation failure <blog.lublu.nl. CAA IN>: nodata proof failed from 178.62.243.138 and 2a0b:7280:100:0:4e1:baff:fe00:20b2

Submitted Aug 20 20:17:09 2021. Sat in queue for 2ms. Completed in 6s. Show verbose information.