Activating credit card payments is quite straightforward. But it seems anything but credit cards is not half as easy. 

Odoo (11) provides several payment acquirers out of the box. Just install, enter the right ID and keys/codes/tokens (name depends on acquirer) and activate. 

I would expect that in the Stripe/Paypal/Adyen (or Odoo) backend you select which payment methods to accept. 
And usually it indeed works that way.

But when I test, with Stripe, It only gives me the credit card payment option. 
Adyen I have not managed to get any payment through (error message on checkout: At this moment there are no payment methods available for this combination of amount, currency and account)

Please advice.