This is a change in V4. In earlier versions, the default blocking mode was IP, which returned the IP address of the Pi-Hole. The new default is NULL (as explained in the linked article) as the developers found that NULL provided the best performance for the majority of users.
So I did the BLOCKINGMODE=IP-NODATA-AAAA but the result point to the local IP address instead of the public address and I'm not sure how to change that.