You can only hit the "Connect Your Location" button if you don't want to create an app.
But if you want to create an App for your location connection, You need to create one yourself. To do that, go to the marketplace and sign up if you haven't an account. log in and go to My Apps.
On your My Apps page click on the "+ Create App" button. you will get the create a new App window. and you need to fill in the required fields. This App may be private or public, our recommendation is to keep it private, and you must select the "sub-account" as the
Scopes should be:
And must exclude these scopes because those are agency-level scopes.
It's important if your app haven't these scopes, you will get an error to get authenticated.
Now you need to set your redirect link in your app and you can get your redirect link on the "GHL Wizard" plugin settings page.
Add a client key that will provide you with a client ID and client secret. copy your client ID & client secret and add those to your "GHL Wizard" settings page.
You must save your settings on your App page and save the client ID and client secret on the "GHL Wiard" plugin settings page.
You are almost done. Now hit on the "Connect Your Location" button and connect your location with your WordPress website.