When a customer is deleted in Recharge or an email address is changed, Klaviyo creates a new profile for that user. When this occurs, Recharge cannot update the old profile.

To avoid making manual updates through Klaviyo in the future, first cancel all the customers subscriptions in Klaviyo, which may take a few moments, prior to deleting the customers from Recharge.

Manually resolve the out of sync subscription properties by deleting the customer profile or manually updating the custom property: 

• Delete the customer profile from Klaviyo by clicking Delete Profile on the customer's profile.
  
• Manually update a custom properties by hovering over the property and clicking the pencil icon.