Not able to access Blackboard AMI

Hi,

We are trying to set up Blackboard AMI to test out LTI application. We followed the instructions under “Usage Information” in https://aws.amazon.com/marketplace/pp/B077T4SX2B?qid=1547476864757&sr=0-1&ref_=srh_res_product_title . We see our EC2 instance is running.

However when we hit: https://{Public IP of the instance} we don’t get any response(“failed” status). We created the instance from 3500.7.0 (Jan 09, 2019) version of AMI (tried 3500.5.0 too). We are able to connect to the instance via SSH. When I go to Path: /usr/local/blackboard/logs I see some log files but I am not sure which one is the most helpful for my case. I see some exception was thrown like this: "Temporary failure in name resolution" in "bb-services-log.txt"

I am not sure if we are missing any step.

Thank you!