Help with connecting Gmail small business to gmail

Need help
1

I have tried to install the gmail small business plugin with little sucess
I created an app in my google developer console
I copied the API key and enabled gmail as a service

then I added Oauth and was given an client secret and and App ID
I put the correct re-auth URL

I have only 2 fields API key and App secret. Not sure where does the App ID go. fill data in the gmail small business plugin. Any idea how I can fix this issue?

2

this works for accessing the google calendar api: Google Calendar API use case

modify it with the appropriate scopes and you should be good to go