HTB Academy - Password Attacks - Pass the ticket from Windows

I have connected by RDP to the target with the provided credentials without any problems. However, when I export the keys with either Mimikatz or Rubeus, I only get keys for the username MS01$. I see where the other users are listed, but no keys were collected for anyone but MS01. I got the first question by just giving the number of usernames listed that had regular names, but none of those names had keys associated with them in either Mimikatz or Rubeus. So the second question wants you to use the key you collected for the username john, but I have no key collected for that user. What am I doing wrong?