Our organization has registered in GuideStar, and GuideStar is supposed to send the confirmation to AmazonSmile, so that our organization can received donations. Here is the reply from AmazonSmile,
"It appears that you recently received your 501(c)(3) designation from the IRS and there is typically a lag of a few months before a new charity is added to our system. The exact timing is dependent on the automated delivery of this information from GuideStar."
Organization name: Nankai Alumni Association of Chicago
Please deliver the information at your early convenience.