Hello @pmwordpress1
if the payment methods are not visible that can have different reasons? Did you already apply for a PayPal Plus account and did it gets approved by PayPal Plus? Did you check your API details if they are correct? Did you already test it by deactivating all other plugins and using the Storefront Theme?
We would be happy to help you but we would need more information. Maybe you can contact us under [email protected] so we can have a closer look.
Best regards
Andreas