The guests who signed up using the opt-in for SMS marketing using the keyword are signed up as Loyalty guests for the brand. These guests are saved along with all other Loyalty guests and they can be searched with their phone number.
You can tell a guest signed up via SMS as the guest will show SMS in their account as shown below.
Note: If a guest has not yet signed up with Loyalty on the app or online and linked their phone number, the guest will display as Guest User and this guest has to be searched via phone number.
If further assistance is required, submit a ticket to Punchh Support. (For help submitting a ticket, click here)