The option for the SharePoint 2013 Workflow platform is not available because the workflow service is not configured on the server. Please contact your server administrator even after installing Workflow Manager

You get The option for the SharePoint 2013 Workflow platform is not available because the workflow service is not configured on the server. Please contact your server administrator even after installing and configuring Workflow Manager 1.0 for SharePoint 2013.

Please check the below things:

• Verify the hidden web scoped feature "WorkflowServiceStore" feature is activated on the site.

          Get-SPFeature -Limit All -Web htt://siteurl
           If you don't see the feature is activated, activate the above feature.

• Verify the Service Application associations of the web application in Central Administration whether it has a service connection "Workflow Service Application"