Deploy Loki from helm charts on EKS not working

I have tried to deploy Loki on EKS based on the helm charts provided at the howto pages.
However I cant seem to get it working and not sure this is a helm chart issue, misconfiguration at the EKS level or any networking issue [e.g. AWS Secuirty gourp]
How can one validate the source of all evil and what is holding from the Loki to communicate with the Grafana server i have on the same EKS [different namespace though]