My request was declined:

"We empathize with your disappointment but mileage expiry has always been an integral part of Miles & More. The accumulated award miles are yours to enjoy for 36 months from the date of the activities. After this period, any unused credits are automatically deleted from your account at the end of the relevant quarter. This information is available online 24/7 at www.miles-and-more.com > My account > Mileage account <."

"As explained in our previous e-mail, expired miles cannot be re-credited. This applies to all effected members without exception. Please note that these miles were supposed to expire in the quarter ending 31 December 2021."

This is despite me explaining that my award was canceled on 3 January and the miles should have expired at the end of the quarter, not on 4 January as they were. I have gone back and forth with them twice now and they will not budget. 182K miles gone. Insanity.