Word to the wise:
Just to let you know, its not very nice to correct someone to make your self look good. Just because your in college learning to be a English teacher for other countries doesn't make you the better one, even you can be wrong. (Remember, just because some one is older dose not make them wiser.)
Maybe this person you quoted knows their English well and missed typed or was rushed.
So don't correct someone to make your self look good it's down right mean!
I'm not trying to belittle you or have you feel attacked, I just don't like seeing people putting other people down to make themselves look better you may not have realized it but that is not a thing to do to try and sell your self on being the better one for the job.