I use these regex from mmotti pihole-regex/regex.list at master · mmotti/pihole-regex · GitHub
A freind of mine asked me that he can't read these site ad.nl
This a Dutch newspaper site, after whitelist it's still blocked by regex
Pihole version:
Pi-hole version is v4.3.1 (Latest: v4.3.1)
AdminLTE version is v4.3 (Latest: v4.3)
FTL version is v4.3.1 (Latest: v4.3.1)
After I removed ^(.+[-.])??m?ad[sxv]?[0-9]*[-.]
in the regex list it works.
You need to whitelist all the domains that serve content from that site. You can not just whitelist the main domain as in a wildcard style configuration.