WhatsApp is a service that requires an internet connection in order to work, so it should not be a problem with one of our Data plans.
However, as our Voice Plan phone numbers are temporary, it is important to keep your WhatsApp under your original permanent number so you will not lose access to your WhatsApp.
Simply make sure your eSIM line is active, and you can continue using your WhatsApp without the need for any further action on your end.