I'm trying to pre-authorize my clients card to charge them later using

I'm trying to pre-authorize my clients card to charge them later using Square. I've tested my form but where does my client's credit card information go once they've submitted the form? Should it be showing up in my Square App under customers? If so, it's not doing that either.

I've checked the only form with a payment integration on your account and it seems you have a free product, note this will work as long as there is an amount to charge.