Thanks, going through those steps now one-by-one. As I am checking for ‘last_activity’ for each user, I noticed in the _usermeta table I have ‘nickname’ twice. Could that cause an issue, namely that there is no primary ‘Name’ field? See umeta_id 1 and 21: https://www.dropbox.com/s/ytsmnsdam82xbdf/Screenshot%202018-08-09%2017.46.11.png?dl=0