Knifty Knitting wont ship

Hello 🙂

I have question. I have trouble to click one time the "ship on Plopsy" to make mailbox appear on the queue list. I repair the game yesterday (im my country is now 11:30 am, Thursday) hoping the next day when I play it won't happen again. I have to press the ship over and over again to make the mailbox appear on the queue list.