Prestashop & PayPal Plus

[ThreeCheeseHigh]

Hello, there. 

We have a Prestashop installation and use a 3rd party module for PayPal Plus. The module works so far and offers the following payment methods: Paypal, credit card, purchase on account and direct debit.

When using Paypal as a payment method, the sale can be completed without any problems. With the other payment methods it comes to the following errors:

• Credit card (takes extremely long) - Error message: Unfortunately a system error has occurred. Try again later.
• Direct Debit - Error Message:
  name: INSTRUMENT_DECLINED
  [...]
  debug_id: 2abbd726a0a14
• Purchase on account - Error message: Unfortunately we could not process your purchase on account at present.

It is important to note that the three payment methods above should work without a Paypal account. So no risk assessment should take place here. I also used the test accounts on this page for the credit card payment:

https://developer.paypal.com/docs/classic/payflow/payflow-pro/payflow-pro-testing/#credit-card-numbe...

Now to my question: How can we reasonably test the payment methods without getting these errors? 

Thank you!

[ThreeCheeseHigh]

If I use my personal bank accout with direct debit payment I get the following error:

• name: INSTRUMENT_DECLINED
details:
• message: The instrument presented was either declined by the processor or bank, or it can't be used for this payment.
• information_link: https://developer.paypal.com/docs/api/payments/#errors
• debug_id: 602384c356d9a