# Guides

- [App User Guide](/guide/app-guide.md): User Guide for the Android application v. 2.1.0 and higher
- [Getting Ready to Use](/guide/app-guide/app-start.md)
- [Viewing the App Version](/guide/app-guide/app-version.md)
- [Trusted Device Criteria](/guide/app-guide/trusted-devices.md)
- [The device is locked for the App](/guide/app-guide/trusted-devices/device-blocked.md)
- [Device Setup](/guide/app-guide/device-setup.md)
- [Sign in](/guide/app-guide/sign-in.md)
- [Change and Recovery Password](/guide/app-guide/change-password.md)
- [Payments acceptance](/guide/app-guide/payments.md)
- [Payment via manual PAN entry](/guide/app-guide/payments/pan-entry.md)
- [Payment cancelation](/guide/app-guide/reversal.md)
- [Refund](/guide/app-guide/refund.md)
- [Why and How to close the Business Day](/guide/app-guide/business-day.md)
- [Merchant's web portal Guide](/guide/portal-guide.md)
- [Log in to Merchant’s portal](/guide/portal-guide/web-sign-in.md)
- [Cashiers Management](/guide/portal-guide/cashiers.md)
- [Device Management](/guide/portal-guide/device-management.md)
- [Transactions Log](/guide/portal-guide/all-transactions.md)