Hi Deriv Community Members, 
AstroPay is an online payment service and you can fund your accounts using Astropay e-wallets, gift cards, vouchers, or digital cards.
We offer different banks and payment methods for our clients to use inside Astropay.
When you use any payment method inside Astropay, an Astropay account is created automatically for you, if you’re not aware of your credentials you can contact Astropay support.
We can inform you that as soon as you made the deposit, an Astropay account will be created with your mobile number. You may try to log in using your mobile number moving forwards.
Hope this information helps
If you have any questions, please visit our Help Centre or contact us via Live Chat and WhatsApp.