Touché! That's actually the app I downloaded but was trying to find a free solution. I knew I coded it right so thanks for closing the loop on why this wasn't working. 

I think you misunderstood. I am not referring to a login page. I am referring to the my store's password page – the page shown instead of taking visitors to the store. I enabled "site password" in Shopify because I'm not ready for customers to access...

Yeah, I tested with multiple different phone numbers just using the correct number of digits. I also tested on mobile with a different number and that didn't work either. 

I added custom code to include first name, last name, and phone number along with the standard email field on my password page. First and Last name are passing through to customer info in my admin panel, but phone number won't go through. I've tried ...