I traded in my XS Max for a 13 PM using the $1000 trade in deal from AT&T at an Apple Store 2 days ago however when I checked the Apple Store app today, I see that the trade in value was revised down to $700. Has anyone else run into this or have any advice on how to handle this? As far as I know, my XS Max was in good condition- no cracks, everything worked and turned on.