I can see that your domain name is pointing to two different IPs. Is that expected? It should only point to the DNS of your load balancer.
Also, can you undo the change from this reply? As you said you deleted the dummy cert, please create it again following this guide. As you are only interested in the self-signed certificate, you can ignore the step about sending the
cert.csr to the certificate authority.
Once the server.crt and server.key are created, you can restart apache with
sudo /opt/bitnami/ctlscript.sh restart apache.
Try then accessing your server using the instance external IP, both HTTP and HTTPS.
If you find any issue, please re-run the bnsupport tool and send us the code.