Why do I see “This app isn’t verified” message?

To migrate your emails from Gmail to any of the supported help desks you need to connect your Gmail account. But because our application is still pending review by the team at Google, you will see this message:

Having your app reviewed by Google is a lengthy process, so for now what you need to do is click on Advanced:

And then click Go to help-desk-migration.com:

You will then be asked to grant access to emails. Click Allow and continue your migration.