To get Android Pay Public key you need:
- Go to the "Apps" section. Click on "Manage private apps" and you will be moved to the private app page.
- Choose the app, that was created for getting Storefront token.
- In the "Storefront API" section click on "Configure Mobile Buy SDK settings (optional)".
- In the "MOBILE BUY SDK (ANDROID)" section press the "Enable" button.
- After page updating, "Public key" will appear in the "MOBILE BUY SDK (ANDROID)" section.
- Copy it and paste on the configuration page.