Validate that changed recovery email isn't a WooCommerce primary email
When the user changes their recovery email in the middleware, confirm that it is not already the primary email of a WooCommerce account.
Due to an influx of spam, we have had to impose restrictions on new accounts. Please see this wiki page for instructions on how to get full permissions. Sorry for the inconvenience.
When the user changes their recovery email in the middleware, confirm that it is not already the primary email of a WooCommerce account.