This feature requires you to upload new excel phonebook, the current imported phonebook will produce error.
The xlsx file will be the same, just need to re-import.
Delete the current phonebooks and import new xlsx file to add new phonebooks.
Go to menu “Phonebooks” -> click on the “PHONEBOOK DATA” to show the contacts -> click on the “Name”/”Phone” to edit contact.
On some cases, specially if you install wazone on a VPS, the update process not fully update the database.
You can check if the database open phpmyadmin -> click table “pbtemps” -> see the structure.
It must have 3 columns: id, name, and phone>
If you have 2, then add column id manually