This is not possible at the moment. See HTTP OAuth2 Module - How to get Refresh Token for Google APIs - #4 by samliew
For technical issues or bugs with the OAuth2 module like this, directly contacting support can often lead to a faster resolution. They have access to your specific account details, scenario and scenario logs, server-side logs, and internal tools and resources, which allows them to investigate more thoroughly than what you have access to.
You can open a new ticket, or if you are unable to login for some reason, you also can reach support using the contact form on the website.
If you manage to get your issue resolved with support, we’d still love to hear about it! Sharing your solution on the forum can help others facing similar problems.
I’m sure others would agree that this is a nice feature to have.
You can submit this improvement to the HTTP OAuth 2.0 module suggestion to the Idea exchange, under App improvement ideas.
Don’t forget to search for it first, just in case someone already suggested it, so that you don’t end up creating a duplicate.
