[NEWBIE] How to replace bitnami "Congratulations" page with my website homepage

Hi, I use Amazon AMI: Bitnami tomcat stack 7.0.27-0 launched in AWS ec2 instance. In the instance I deploy two kind of website. One is using Apache and the other is using Tomcat.

All website request is come from AWS Load Balancer. When i access ec2 instance from load balancer A record. It always shows congratulation page. When i click access my application, browser show tomcat manager. How can I access the website that I deployed in apache?

I have put my website artifact into /opt/bitnami/apache2/htdocs/promo/

I have checked listened port,document root and directory at apache configuration file at /opt/bitnami/apache2/conf/httpd.conf

Listen 80
DocumentRoot "/opt/bitnami/apache2/htdocs/promo"
<Directory "/opt/bitnami/apache2/htdocs/promo">
Options FollowSymLinks MultiViews
AddLanguage en en
.
.
.
AllowOverride None
Order allow,deny
Allow from all
</Directory>

Load balancer has been setup to receive HTTP connection through port 80 and direct it with the same protocol into instance's port 80

I have searched this forum and found some similar case but not with Tomcat Stack. Please help me.

Big Thanks.