A reader sent this to me. It was a sponsored ad on Facebook. I have removed identifying information. It was correct in the headline, but incorrect in the actual body of the ad.
This looks like it was one of those “I know what it is supposed to say” problems–where you skip over words that are misspelled because your brain knows that it is supposed to be even though your eyes could see something different. That can happen when you’ve read it too many times, you are going too fast, or you didn’t proofread it at all because the spell checker didn’t show any mistakes. Slow down and actually read the email, the letter, the pleading, or the ad before it is published or sent off.