For my Marriott account (formerly SPG), Award Wallet shows points will expire in 5 months. Yet, there was points activity last month and this month as well. Activity earned via Amex SPG card. I thought with the merger, points expire in 24 months of *no activity*?

For my roomate's SPG account, last activity was 2/8/18.
Yet, Award wallet says "unknown" for expiration date (but in the "history tab" it does see the activity from 2/8/18)

??