First Responder upload issue?

I remember last year getting a surprise on my bill when my discount had ended and I needed to reverify my self. This year I set a reminder to do it again, but my documents were rejected (even though they meet the criteria AND are the same as last year with an updated pay stub). 

What is the issue? Did I try and provide my documents too early and they were auto rejected? Do I have some magic 3 day window to complete this task so that my account can be upcharged for one month of service when I miss this magical window? Does anyone know? Thanks for any help.