It is not possible for now to add two or more charging location.
If you added them in the past, you will still be able to see them but you won't be able to add new ones.
If you are a BMW user: make sure that the charging location you selected in the Jedlix app is the same as the one you indicated when you connected your BMW app or your charging sessions won't be recorded.
Please keep in mind that public charging stations are not supported.