Since Flex RIs have to be purchased for the following month by the 25th of the month, it would be important to know when the deadline is coming up. If a user isn't keeping track themselves, then they could miss the cutoff date and their chance at purchasing Flex RIs for the following month.
Feature Request:
Alerts for users who made Flex RI purchases that reminds them that the cutoff date (25th) is coming up. Either customizable or on some default date like the 15th, so they have a 10 day notice.