LMAO, I guess your special! JK JK...
In all seriousness, My progress rewards occasionally disappear after 3-4 weeks. Meaning, if I have 10, one day I've got 8-9. Most last well over a month.
I haven't lost any in the first two weeks, so maybe that's the intent of the guidelines.
For coli/for awards, after the 5 days they seem to redeem themselves. In my mostly unused account on S3, the diamonds pile up as rewards "disappear". I dont know if all emails cash themselves in but I have seen progress rewards applied to my account when they "go missing".
It would be nice to get a solid answer, to set the expectation, from Gree. That's what our GS was trying to find out.