Welcome to AltPay!
For your first login, you will need the email address you've used for the registration and the password you've created during the first stage of the registration.
Enter the code from SMS that is sent to the phone number you've used for the registration.
If you did not receive SMS, please check this article: https://altpay.freshdesk.com/en/support/solutions/articles/47001261393-sms-problem
After the first login, you can enable Google Authenticator as a 2-factor-autentification method.
Check How to enable 2FA? Article on how to do so
If you choose to use the Google Authenticator, follow these instructions:
Please save the secret code for a simpler restoring procedure.
After that, please start enjoying the numerous online banking features!