running a docker loop device on aws

I'm new to aws and am having some issues with getting my mobile app back running again. Forgive me if this question seems vague.

For a school project we created a mobile app on aws and deployed using docker containers (another student managed these tasks). When trying to get my own key pair to ssh into my ec2 instance i detached the volume associated with my instance and reattached it after getting my own key pair. Now i can ssh into my instance but my front end cant talk to my web server.

So my question is, do i create a new application on elastic beanstalk to deploy my app? Even though when i run lsblk is shows a have a docker loop device and when i run docker images i see several that match the name of my application? or do i somehow get the container running again, docker run doesn't seem to be working.