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Go to the "Authentication" tab and click on "Test configured authentication services" and "default-sp". If it is all working you should see output. You'll probably want to set the default-sp to avoid the intermediary screen: http://simplesamlphp.org/docs/stable/simplesamlphp-sp#section_3
Known Issues
*Attribute mapping: * By default, attributes map to the OID string and not something friendly like EduPersonName, etc. To use friendly attribute names, edit your <simplesaml_installdir>/config/config.php and change:
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