Your U.S. mobile phone number or email address may already be associated with a Zelle enrollment through another financial institution or the Zelle App. 

You can update your phone number and email address by logging into your Online Banking Portal and updating this information, or you can call Quontic Online & Mobile banking support toll-free at 1-800-908-6600 or email [email protected] for further assistance. 

Possible reasons Quontic Zelle is not working
Reason 1: Your email address or U.S. Mobile number is already associated with a Zelle Profile through another participating bank or credit union. Your Mobile number or email address can’t be enrolled with more than one Zelle account. 
Reason 2: You have exceeded the transfer limit.
The maximum transaction limit is $500, and the maximum allowed for total daily transactions is $1,000.