Maybe, "Thanks!" is just too casual. So I upped it to "Thank you!" and tried again:
And that worked.
That's weird, right?
It's probably weird that I'm thinking this much about it, but I can't figure out why you'd have to use a majority of the characters to make your message go through. Just add this to the list of things I don’t understand about the USPS. Like the number of signs in my local post office telling customers the post office trash cans are not for outside trash.
This is a big problem? Really?
Oh well. I just hope the message gets through to our mailman. And I hope everyone who works at our post office knows I never bring in outside trash. Never.