Your question is not clear. It will be better if you give us an insight on what exactly is happening with dual whatsapp and what other methods you have tried to solve the problem. And which device you are facing this problem. Thanks.
We would request you to register your concern in Samsung Members Application. So, that our concern team gets back to you as soon as possible.
Please follow this path to register your concern in Samsung Members Application (Open Samsung Members Application > Get help > Send Feedback > Error report/Ask questions).
Note. please attach the error log file within 15 minutes of the error occurred.
