Go to My Contacts by clicking on My Contacts in the top navigation bar.
Click on the Integrations button on the My Contacts page:
Click on Connect next to Google Sheets:
Finish - a green checkmark should appear next to the Google Sheets logo:
Please note that My Contacts is currently only available for Shopify users who are connected to a POWR app via Shopify.
Please click here if you want to know more about My Contacts
Please click here if you want to integrate My Contacts with Shopify Customers