How did my E*TRADE account go negative?

I put something like $70 into ETRADE a year ago and paid their fees to buy etc. etc.
I checked it for the first time today after I got a notification that I was in the negatives and it’s at$-8. I had to pay a common stock mandatory fee or something is what it said. How can an account possibly goto the negatives when my stock prices have stayed pretty much the same.
Is this something ETRADE does? Overall I’ve had a bad experience with them and this just pushes me right over the edge.
Anything I can do to reverse this or is it just an L?

Edit: thank you all for the answers! Sounds like I just take the loss here and move on from it. Drops in the bucket at the end of the day