There seems to be something going on with Paypal and setting up a subscription.
Paypal is one of the services that is supposed to allow recurring payments but for some reason I have been told that people are getting errors when trying to do it through there. I am looking into it.
For now, the other payment methods I use are WooCommerce (which goes through Stripe) and Stripe directly. I will go over this and get some support help to figure it out.
****UPDATE****
I am dumb. I have taken STRIPE out of Sandbox mode *headdesk* so that should work fine on subscriptions. As far as Paypal, I am reaching out for support.