The email instructions posted seem pretty clear to me and I'm not computer savy at all. Jenna bear can attest to this. I emailed them back and forth too.
I agree the online instructions suck. But now it seems like there is a simple communication error going on. It seems that they are not sure exactly what you are confused about.
I'd be happy to help you get it sorted, as it took me a bit but finally I got it after a few emails back and forth.
I do agree, there should be a phone number or a live chat box for purchases of the autocal.
Anyways, pm me if you want to set up a phone call and maybe I can help.