Got this too, my history with AA is that when they merged with US I was Gold with US through gifting, that became PLT, I flew enough to earn GLD last year, then dropped to nothing this year. This year I was at 6 EQS/3,100 EQM/$463 EQD, but I did purchase four paid First Class MSP-HNL tickets recently for travel this Thanksgiving (me plus my family).

My offer to keep Platinum longer:

Keep status longer
To extend your elite benefits through January 31, 2019, earn $5,000 Elite Qualifying Dollars (EQDs) on American or other airlines for travel between the date you register and September 22, 2017.**

Pfft ... I have 28 paid segments on Delta this year and $3,664 MQD, and that's buying first class on about half my trips.