As mentioned here, the "Session timeout" setting specifies the lifetime of our access token. However, when I set it up to timeout after 15min, it does not seem to happen.
Also, the response we get when requesting the access and refresh tokens the first time generates us an access token with @expires_in=nil
and @expires_at=nil
despite Session timeout set as 15 min.
How can I expire the access token so to test our Refresh token process?