This page answers frequently asked questions about Sign in with Klarna in PrestaShop, including button visibility, authentication errors, redirect configuration, and returned customer data.
Use this page when the Sign in with Klarna button does not appear or when authentication does not behave as expected.
Link copied!
These FAQs cover cases where the Sign in with Klarna button does not render.
This usually happens when:
- Redirect URL is not configured in Klarna Merchant Portal
- Required OAuth scopes are missing
- Allowed origins are not set
- The feature is not enabled in the module
- The theme overrides the login template
Link copied!
These FAQs cover issues where the Klarna login flow opens but does not complete.
The most common reasons include:
- Incorrect redirect URL
- Missing scopes such as email, phone, or name
- Domain mismatch between your store and the Merchant Portal configuration
Check the redirect URL configured in the Merchant Portal. It must match exactly the URL provided in your PrestaShop module’s documentation.
Link copied!
These FAQs cover situations where the customer logs in successfully but information is missing.
Klarna can only provide the information allowed by the active scopes and explicitly approved by the customer. If a scope such as email is not enabled, Klarna cannot return that detail.