Correct steps to develop an offline payment method
Hello everyone. I am building a custom offsite payment method. I have created a form at payment method submit_form to ask to the user some data, but the data of this form are not received by the 'redirect_form'. What I am doing wrong? Maybe use the payment method submit_form to ask data to the user is a wrong approach?,or is better to ask to the user at the redirect form? or the user must fill the data in a custom place? or at checkout billing form? Thanks in advance.