fails to send email

Here is one response on testing email…

Google_Auth_Exception thrown

Error refreshing the OAuth2 token, message: ‘{ “error” : “invalid_request”, “error_description” : “Missing required parameter: refresh_token” }’

Yes….I am using your plugin

Hello, I can’t configure the plugin. When I click Grant Permission – on the screen appears error: Strict Standards: Non-static method GmailXOAuth2::getClient()!

@serjiok, I have replied to your forum post here: https://www.ads-software.com/support/topic/grand-permission