Customers can activate the SMS reminder service quickly by visiting this link and logging into the Client Area, and you’ll be Text for :

• Service Notifications – including outage notifications and updates, suspension notifications.
• Support Notifications – includes notifications about Support requests, updates on tickets, password resets and account verification, and other support-related notifications.
• Invoice / Billing Notifications – includes all notifications relating to invoices and billing.

Visit this tutorial “How to enable the service from Client Area”