It's been odd for a while now where some hotels show it and some don't, I'm not quite sure why.

If you can find out the rate code for the 5k package and enter it into the corporate box on the app that may bring up the 5k rate. I'm not sure how you would get the rate code though, someone else may be able to help with that.

It's quite annoying as they have that bonus points tab in the app but it just doesn't seem to like the 5k option when searching.