Nginx config for aws load balancer controller

I am deploying jitsi docker to AWS EKS, I successfully deployed the containers and access to the web page.
But I can not start the meeting due to connection, as I read the wiki, the problem is we have reverse proxy which is AWS load balancer ( aws ingress controller)
The current ver of aws elb not support adding custom config yet. So I couldnt add the custom config as here

anyone experience the same? and have solution for this?
thank you a lot!!