This is expected behavior.
When guests opt to "hide email" during sign up via Apple SSO, it will not trigger the sign up campaign.
Choosing to hide the email causes a masqued email shown below to be sent to Punchh:
Any communication from the brand is typically forwarded to the email being used with the Apple ID. You can find this by going to devices settings > account at the top > password & security > apps using apple ID > locate the app >
This is the same flow seen when hiding email during Facebook SSO.
In an effort to supply information as quickly as possible, this article has been published prior to a formal technical review, and is subject to factual, grammatical, and various structural errors. Data may be incomplete, misordered, or incorrect.
This additional disclaimer will be removed upon formal review of this article. The standard Punchh Inc. KB Disclaimer still applies, and can be found at: https://support.punchh.com/hc/en-us/articles/360040100273-Punchh-Inc-Knowledge-Base-Disclaimer
If further assistance is required, submit a ticket to Punchh Support. (For help submitting a ticket, click here)