Send the following on WhatsApp
Continue to ChatChanging your Google Account will enable Google Assistant immediately https://www.androidsage.com/2017/03/09/changing-your-primary-google-account-will-enable-google-assistant-immediately/
Changing your Google Account will enable Google Assistant immediately https://www.androidsage.com/2017/03/09/changing-your-primary-google-account-will-enable-google-assistant-immediately/