I am a newbie here, I tried to find an answer to a problem I am having and I was unable to find any helpful information.
I have a user that when logged in is not recorded in db tables and his info is not showing up in the Matomo GUI and Visitor logs. But I can see his requests in the Apache log. Other users that log in to the same site are recorded just fine. Any suggestions as to where to look to determine what causes the problem?