You might want to give Guest Services a call about this. That's odd that the tickets scan fine, but then come up as invalid. Our MHP tickets have always scanned in without a problem in the past. Hmmm...I tried to scan the barcode and the number, they scan fine, the number pops up, and the app says it is not a valid ticket. I think it is just looking for actual park entry tickets and not hard ticket event tickets.