Joining a new device without an existing Apple device
So I am starting an ABM account for a local non-profit and my options for adding a new iPad are using a "Customer Number", which I have no idea how to find, or using the Apple Configurator app which isn't possible because I run Linux PCs and Android phone/tablets. I had assumed I would just login the new device using my ABM admin login, which obviously was wrong, but now I am stumped on how to add this. Do I really need to track down another Apple device to start adding the one iPad I want added ABM, or is there some method I am unaware of to add this to the account?
**Update**
I managed to link the guest purchase to my ABM admin account and then when you view the invoice it magically contains a customer number. No customer number on the invoice/receipt in my email from the original purchase. I originally had to purchase this as a "Guest" because the Apple Store would not let me create an account using my Spectrum mobile number (technically they are VOIP). The email used in the "Guest" purchase was my other email on the same domain. Submitted it and now they denied it because:
We received your request to add Apple Customer Number ******* to your Apple Business organization. Menominee Animal Shelter. We are unable to confirm that the Apple Customer Number you submitted belongs to your organization, or it is already associated with another organization
Of course the email says "contact us" which is linked to, of all things, the ABM guide. No contact form, phone number, chat link, etc. Contact us by reading a guide that is of no help........ WTF APPLE! Probably the worst idea I ever had was trying to use ABM for our organization.