This caused me a bit of concern two days ago - I was alarmed to see my spend tracker jump to 25k+ - I didn't have purchases that would get me anywhere near that amount this early in the year, so was there a card open I didn't know about? I called Amex who told me I didn't have any other cards open and suggested I talk to Delta. Talking to Delta would have been difficult due to the weather issues happening right now, so I decided to wait and not worry about it.
The problem was fixed, although my 2019 status went up when I mistakenly hit my 25k of spend and that hasn't reverted yet...