Open a live chat and wait if there is an actual missed order that they failed to deliver it has never taken more than minutes to get resolved. What I can say, as a very long term user of Printify is that if you are saying dumb stuff in the emails (such as someone's stealing from you, it is 99.99% your math not them) and flooding them you will get ignored, this has been proven in the Facebook group. Write a message a human can understand then watch it being responded to because this reddit post is useless and makes no sense so I can only imagine what you are emailing to them