For consultants, clients, and customers, it is best to use a real phone number to receive messages such as Immediate Messages, Followups, Reminders, and Advertiser Notification Messages from Coupon Reach.
If you are using a Google Number/Google Voice Number to receive messages from Coupon Reach, it is more likely, or there's a chance that you won't receive the message/s due to the connection between Google Voice Numbers and SMS API's (Twilio, Txtria, Clicksend).