Yesterday I lost 10 rep. I can't figure why.

    -3	 yesterday
    --------------
    +5	 10:46	   upvote	How does formatting works with a PowerShell function that returns a set of elements?
    +2	 09:41	   accept	How does formatting works with a PowerShell function that returns a set of elements?
    -10	 15:19	   removed	User was removed

The "User was removed" is not clickable, and in my profile, I can't see anything in my activity related to this reputation lost.

Can you enlighten me ?