While creating a new sign-up campaign you can choose the targeted users on the basis of the device they use.
For example, if you wish to include both the mobile users and Web users then the "Only for Mobile Signups" option needs to be unchecked (disabled).
If you want to target the guest who has signed up via Mobile-only then the "Only for Mobile Signups" option needs to be checked (enabled).
If further assistance is required, submit a ticket to Punchh Support. (For help submitting a ticket, click here)