If a guest originally signed in to Punchh with their Facebook account, they should be able to update this email by changing their primary email on Facebook, signing out of their Punchh account, then signing in with Facebook once again.
However, it is possible that a missing configuration of the Facebook Webhook can result in a new account being created when they sign back in again.
If you find this to be the case for your guests, please open a ticket with Punchh support.
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)