I just figured out what I did. I use Docker and the last time I updated to the latest version of keycloak I automated restoring data from a json file. Every time I restarted, I lost all the new users because of restoring with the file.
At least 42 days worth of registered users are simply gone. There was a power outage today and the keycloak server went down. When I brought it back up, all of the users that registered in the last 42 days were GONE!!