I don't run Pi-hole but quickly peeking into the container (docker run -it --rm --entrypoint /bin/sh pihole/pihole:latest
) the folder and files belong to root with the permissions being 755
for the folder and 644
for the files.
chmod 700
most likely killed Pi-hole because a service that is not running as root will be accessing those config files and you removed their read access.
Also, I'm with the guys above. Never chmod 777
anything, period. In 99.9% of cases there's a better way.
Is that a real Deezloader website? That website looks shady af.