@debom If your settings are different, try the settings below. In the Notification E-Mail auth password, enter your gmail password. The next step is VERY IMPORTANT. You MUST scroll all the way to the bottom of the page and click the Save button. Then click on the Test SMTP Settings button. The settings entered do not get used unless they are first saved.
If it still does not work, you might have to go into your Google account security settings and allow less secure applications. I don't think this is necessary though. If you do allow less secure apps and it still doesn't help, don't forget to switch that setting back.
https://support.google.com/cloudidentity/answer/6260879?hl=en
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