The use of Payment Express as payment gateway in Wi5stars, requires registration at: https://www.paymentexpress.com and follow the provided information.
At registration, you will get a “UserName” and a “Key” that have to be entered in the “Copy to use dollarCurrency and Payment Systems”.
Payment Express is a processor for payments made in Australia, New Zealand, United Kingdom, Ireland, United States of America, Canada, India, Bangladesh, Hong Kong, Macau, Malaysia, Singapore, Brunei, Pacific Islands.