I know I added Paypal as a payment option in addition to stripe. When I go to my site to purchase a course, I only see a button for "pay with stripe" I don't see any options for paypal fans.
You should be seeing the option to "Check Out with PayPal" at the bottom of the checkout page (as in the screenshot below).
It's worth noting that certain types of payment (payment plans, subscriptions) are only available via Stripe, so that may be one reason that you're not seeing the "Check Out with PayPal" option.
I hope that helps!