You already have the pins, you already charged everyone shipping, you have your collab partner offering to complete fulfilment for you, you have everything lined up for you to finally just finish. Just do the final step and get these shipped. It will be a massive relief for you and finally allow you to finally put this all behind you. I'm guessing you've spent the shipping money already on things unrelated to shipping, so that's why you haven't sent these out yet, but it is still your responsibility to get these shipped out, as that's what you took our money for. Please, please, pleeeeease just get this finished.