No reason for denied..? Amex Blue Cash Everyday

"Dear

Thank you for applying for Blue Cash Everyday®. Unfortunately, we cannot approve your application at this time.

We made this decision for the following reason(s):

Here's what you should know

We realize this may not have been the outcome you hoped for. Just know that it's been our experience that applicants who were not approved for a new account at one time may qualify in the future. We invite you to apply again at a time when your circumstances have changed."

This is the exact excerpt from the decision file I received three days ago.
I finally had time to read through it, and I realized there’s no stated reason for the denial. It makes me wonder whether this is something they commonly do.