I have the same problem. I was able to make it work a week ago with another domain. I’ve in support with Google for a long time trouble shooting. So far no luck. I haven’t given up yet.
As an aside, I kind of understand how many of the guys who build these plugins and offer them for free can kind of get tired of answering hundreds of support requests. This guy, Jason seems like a smart & sincere young man but it looks like he’s pretty busy with other paid work.
If I figure this out I promise to post it here.
Best,
Joe
FYI, What I’m going to try next is to set up an independent gsuite account for this user. I suspect that maybe because I have the domain set up as a sub user in my primary gsuite account that it is not allowing the auth. It is a different domain.
I’ll report my results here once I go through this.
Honestly, I can’t think of what else to do at this point.
It’s not working. I can’t figure it out.
I deleted all instances of the domain from my main Gsuite account and created a brand new one. Then tried again. Same result as follows below. I pretty much give up on this app unless someone has an idea. It worked for me for about a week then something went wrong and can’t fix. Thanks for all your trouble regardless.
Message from google below:
400. That’s an error.
Error: invalid_scope
This app hasn’t been verified to access: {invalid = [https://mail.google.com/]} Please contact the developer for assistance. Are you the developer? If this project needs these scopes, sign in to an account with access to edit your project and try again. If not, contact the developer for help.
That’s all we know.
Note that I spent about 3 hours on the phone with Google gsuite support. They couldn’t help me figure it out either.
