issues with google extention on unexposed instance

[fbertier]

Hi

I'm thinking about buying the google extention for email, contact, calendar sync and OAUTH for users.
The app is not exposed on the internet, only lan and VPN acces. before bying i'm doing some tests on the oauth fonction and after having configured everything correctly (good redirection URIs etc, i still get an error "uri_missmatch" when i try to connect and oauth user.
Could it be that it doesn't work because the app is not reachable from Internet or because i use a ssl certificate that is not certified ?

Thanks

[victor]

Use ngrok or similar services for testing, or simply sign up for a free month of Espo Cloud and connect from there.

[fbertier]

but the app is meant to stay unreachable from the net...
Are you saying that it's not supposed to work if not exposed ?