use user.get_identity() rather than user.username when checking if

recovery email is already used in WC.
Signed-off-by: Birin Sanchez <birin.sanchez@puri.sm>

purist/forms.py

@@ -111,8 +111,8 @@ class ProfileConfigureForm(forms.ModelForm):
         query = "customers?role=all&limit=1&email=" + new_eml
         woo_response = woo.get(query)
         total_emails = int(woo_response.headers['X-WP-Total'])
-        if  total_emails > 1 or \
-            (total_emails == 1 and woo_response.json()[0]['username'] != self.user.username):
+        if total_emails > 1 or \
+            (total_emails == 1 and woo_response.json()[0]['username'] != self.user.get_identity()):
             raise ValidationError(_('Sorry, that email is already in use.'), code='already_taken')
         return new_eml