there are 5 PayPal options to use, do I need all of them installed and live or can I just choose one?
I've updated my PayPal acocunt to Business, and can get my API Credentials (this from paypal page):
Credential: API Certificate
Registrant: [name]
API Username: [api user]
API Password: [api pass]
Request Date: [api date]
and I can download my API certificate, which looks something like
Do I use the simple-sounding Express Checkout in the admin/modules/payment list, this seems to have the same kid of information I can get from PayPal easily .. but when I tried it, and did a dummy purchase it went past the payment page saying "This is currently the only payment method available to use on this order. " without saying what the option is, and then on to a successful purchase ... without option for payment with PayPal.
Could anyone point my in the right direction please?