It appears Amex is now using Expedia for FHR more consistently. Three recent examples where FHR stays booked on the Amex website were deemed ineligible for Honors.
- Conrad Midtown, NYC. August 2022. Prepaid FHR with a "stay 4 nights get one free" built into the nightly rate. Sent via Expedia. Ineligible.
- Conrad Midtown, NYC. August 2022. Non-prepaid FHR without a promotional rate. Sent via Expedia. Ineligible.
- Waldorf Astoria, Orlando. September 2022. Prepaid FHR without a promotional rate. Sent via Expedia. Ineligible.
Can't speak to hotels outside the U.S. But it appears that if you want Honors credit, don't use FHR. This is too bad. I had FHR stays at the Conrad Midtown in January and May that both qualified.