Just got an email saying they dropped me from the program. Not a surprise if they base it off frequent flying as I used to be an every week flyer, but between the pandemic and changing jobs I've only flown a handful of times in the past couple years. I redeemed the points for 500 miles at the beginning of January, but they still haven't posted to my SM account. They completely deactivated my Skypanel account so I can't even log in to get a copy of the redemption receipt. At least I still have the redemption email if I have to fill out a complaint form.

Moral of the story is to redeem for those mileage rewards when you can because they can close your account with no notice.