No internet when using Pihole as DNS

Expected Behaviour:

Internet access +add blocking

Actual Behaviour:

Can't reach this page messages in navigators

Debug Token:

https://tricorder.pi-hole.net/e35bcgNx/

When connected :

>nslookup pi.hole
Serveur :   pi.hole
Address:  192.168.0.15

DNS request timed out.
    timeout was 2 seconds.
DNS request timed out.
    timeout was 2 seconds.
Nom :    pi.hole
Addresses:  fe80::9e26:755c:69b5:23b2
          192.168.0.15

In the admin page of my router

I just tried to use google dns with my router :
8.8.8.8 and 8.8.4.4
It worked, so it's definitely a problem coming from my side :frowning:

Edit:
I added google in upstream DNS servers and now it work
I don't know why openDNS don't seem to work with me