Google Login error: invalid_client

We haven't heard of that issue yet. Can you check the following:
* You've properly entered the full "Client Secret" into JFBConnect
* In the API Access area of the Google Console, you've properly set your "Branding Information", including a Product name and home page URL

Beyond that, the only thing I can suggest is to try creating a new Client ID with the "Create Another Client ID" button and using that ID/Secret in JFBConnect. I'm not sure why that would be necessary, but I've read some support posts in the Google Developer area stating that sometimes the keys simply don't work (though it's rare).

I hope that helps,
Alex

I'm not sure I understand what you mean. What custom URLs are you talking about that are in the video but a few pages later? Are you talking about the Redirect URIs that have to be set in the Google Application?

We'd love your feedback on the configuration process. We're overhauling the documentation and planning to break it into smaller pieces to make it easier to follow. That video is the first step and meant to cover the first few pages. The last few pages will be broken into a separate guide, with a separate video, in order to hopefully make things easier to setup and add features slowly instead of having to read everything.

I'm very glad to hear you got it going, and would love any feedback you may have.

Thanks,
Alex