According to the AFCU's customer service rep, the Let It Grow Certificate Special will be ending at the end of next Monday. I called after I noticed the 16-month CD is no longer being shown as an option in the online application, and just this morning, it doesn't seem to be listed on the website. The CSR said that this CD can't be funded directly from the online application. She recommended to fund your savings account online and then call to have the money transfered into the CD.
This credit union is available to anyone. For more information about this special and this credit union, please refer to my post.