I've tried to install RO Payments with Mollie Recurring payments and RSform. When I've selected my bank and hit the pay button I get the following error:
Foutmelding: 0 - Argument 1 passed to Jdideal\Recurring\Mollie::createCustomer() must be of the type string, null given, called in ***/libraries/Jdideal/Psp/Mollie.php on line 421
(the stars represent the path)
Did I do something wrong?
With kind regards,