Endpoint does not work because of HTTPS redirect.

To redirect HTTP traffic to HTTPS on your Amplify app, you can configure redirects in the Amplify console settings.

• Log into the AWS Amplify console and select your app
• Go to the app settings section where you can manage routing and redirects.
• Look for options to add URL redirect rules. You can add a rule to redirect all HTTP requests to the same URL but with HTTPS.
• Make sure the security group for your Amplify app allows outbound traffic on port 443.
• You can also configure HTTPS for your EC2 instance hosting the WordPress site using an Application Load Balancer and SSL/TLS certificate. The AWS documentation provides steps to create an HTTPS listener and redirect HTTP to HTTPS using listener rules.