Auth redirect pages

Domain prefix		This is the subdomain of your Cognito URLs (see the outputs from your stack). By default it's your stack name.
Region		This is AWS region you have deployed to. Leave as `eu-west-2` unless you've changed this in your template or deployment.
Client id		This is your Cognito User Pool Client id (see the outputs from your stack).
Redirect uri		This is URL to redirect to on authentication. Leave as the link to logged_in.html unless you've changed this in your template or deployment.