Well, something is changing, but I'm not sure when.

See this other thread I just started about the new key packet:

http://www.flyertalk.com/forum/marri...antly-com.html

This key packet (or any key packet promoting mobile check-in) didn't exist last week, so it also imples that mobile check-in just got revamped. So your experiences from previous weeks with mobile check-in may not apply.

You may want see if your app has an update waiting to applied?

See also here:

http://www.marriott.com/marriott/mob...and-resorts.mi

It says North America and "select" hotels around the world. But you didn't explain where this hotel is that you keep checking into!