How do I receive my login credentials for the merchant portal? 26 January 2023 14:18 When you sign up with HeidiPay you will receive your username and password by email from us. If you haven’t received your credentials, please contact us here. Related articles Where can I manage my orders, including initiating a refund or a dispute? General inquiries What if I forgot my password? What if I forgot my password? How does HeidiPay work?