fixed an issue with using ngrok for other connections and also ngrok not using auth_token

from pyngrok import ngrok, conf, exception

def connect(token, port, region):

    # Guard for existing tunnels

    existing = ngrok.get_tunnels()

    if existing:

        public_url = existing[0].public_url

        print(f'ngrok has already been connected to localhost:{port}! URL: {public_url}\n'

               'You can use this link after the launch is complete.')

        return

    account = None

    if token is None:

        token = 'None'

    config = conf.PyngrokConfig(

        auth_token=token, region=region

    )

    # Guard for existing tunnels

    existing = ngrok.get_tunnels(pyngrok_config=config)

    if existing:

        for established in existing:

            # Extra configuration in the case that the user is also using ngrok for other tunnels

            if established.config['addr'][-4:] == str(port):

                public_url = existing[0].public_url

                print(f'ngrok has already been connected to localhost:{port}! URL: {public_url}\n'

                    'You can use this link after the launch is complete.')

                return

    try:

        if account is None:

            public_url = ngrok.connect(port, pyngrok_config=config, bind_tls=True).public_url