To process the $1 USD fee in the age verification process, we use a secure 3rd party service to process this payment called Stripe.
You can read their privacy policy here.
In short: We do not store any payment info or process any payments through our own servers. Once you have age verified an account, you do not need to run through this process for that specific account ever again.
For more information on how to age verify your account, or what it means to be in a junior account, please read here.