Once you activate the Servv plan, you can track the Servv billing through your Shopify account by following the steps given below.
1. Login to your Shopify account. Go to Settings > Billing.
2. Under the Bills section, you will see the total amount you are being charged. Click on "View details" option to track the individual subscription.
3. You will see the list of Apps you have subscribed. Look for Servv and you will find the billing amount and period for the app.