How do I resume WhatsApp alerts?

Cardmembers can enroll for ‘Whatsapp alerts’ for Payment Due Reminders by logging in to their online account and selecting WhatsApp under Alert Preferences in the “Communication & Online Statement” section of the Account Management tab. By opting in, Cardmembers authorize American Express to send transaction and service-related messages via WhatsApp. The service can be discontinued at any time by contacting us on the number mentioned on the reverse of the Card, or through 24x7 Support on the Amex Mobile App.