Starting a new Discourse community with old database

I’m not sure if you have actually looked at the official Discourse install guide which is the only supported install method I’ve heard of.

Other users have referred you to it in your other topic, e.g. this reply:
https://meta.discourse.org/t/can-not-configure-my-bitnami-discourse-instance-to-send-out-mails/101618/2?u=remah

You will see on other topics that AWS/Bitnami installs are not supported although people may still be able to help you, e.g. as in this topic:

https://meta.discourse.org/t/just-installed-discourse-on-aws/86146?u=remah

FYI, here is some background on the AWS install guide that you found.

The blog owner is a user here, @stroupaloop, although I haven’t seen him posting for a while.
He had a couple of topics on AWS that I read when i first joined: