mongodb-high-availability - medium t-shirt size template failed to deploy

mongodb-high-availability (https://github.com/Azure/azure-quickstart-templates/tree/master/mongodb-high-availability)

I have tried both xsmall and small t-shirt sized template and it works well, but the medium sized version of the template doesnt get deployed on azure it fail to deploy minimum two member-resoure every time i try to deploy.
This is the error status i found inside operation details

{
"status": "Failed",
"error": {
"code": "ResourceDeploymentFailure",
"message": "The resource operation completed with terminal provisioning state 'Failed'.",
"details": [
{
"code": "VMExtensionProvisioningTimeout",
"message": "Provisioning of VM extension 'installmongodb' has timed out. Extension installation may be taking too long, or extension status could not be obtained."
}
]
}
}


Start with the mongodb-high-availability template linked in the issue and compare deployments of the xsmall, small, and medium t-shirt sizes. Review the Azure operation details for the medium deployment, focusing on the installmongodb VM extension timeout. Done means the medium-sized template deploys successfully without the reported failure.

Written by the indexing model from the issue text.