Error: "context deadline exceeded (Client.Timeout exceeded while awaiting headers)"

I've been trying to get started with Onelogin + Terraform, but have been running into the same issue on two different computers using two different Onelogin Development accounts.

I've set up the provider based on the documentation (see EXAMPLE 1 below.)
I've exported the Client ID and Client Secret into the environment variables as documented and verified (i.e., env | grep ONELOGIN).
I've been able to create a user via creating it in a users.tf file (see EXAMPLE 2 below.)
However, I have been getting a Timeout error when running different operations (e.g., terraform apply, terraform refresh).

Any thoughts on how to translate the error message from below and resolve?

EXAMPLE 1

terraform {
  required_providers {
    onelogin = { 
      source = "onelogin/onelogin"
      version = "0.1.25"
    }   
  }
}

provider "onelogin" {
  # Configuration options
}

EXAMPLE 2

resource onelogin_users example_user {
    username  = "example"
    email     = "redacted@gmail.com"
  }

EXAMPLE 3

➜  onelogin-terraform terraform plan
onelogin_users.example_user Refreshing state... [id=12345678]
╷
│ Error: request error: context: ol http service, error_message: Post "https://api.us.onelogin.com/auth/oauth2/v2/token": context deadline exceeded (Client.Timeout exceeded while awaiting headers)
│ 
│   with onelogin_users.example_user,
│   on users.tf line 1, in resource "onelogin_users" "example_user":
│    1: resource onelogin_users example_user {
│ 
╵

onelogin / terraform-provider-onelogin

Error: "context deadline exceeded (Client.Timeout exceeded while awaiting headers)" #82