Elastic Beanstalk in private VPC without internet access and with VPC endpoints

Hi,

I created EB cluster in private subnets with no internet access and created all VPC Endpoints as per docs: Beanstalk Beanstalk Health SQS (not sure why it may be needed) s3 gateway CloudFormation Logs

It unblocked some of the processes on the instances, but instance still cannot report health to EB cluster.

    Process default has been unhealthy for 18 hours (Target.FailedHealthChecks).
    Instance has not sent any data since launch.

What am I missing? Thanks