Whatsapp announced that Whatsapp Plus is not an official application and they are not supporting any type of service to whatsapp plus developer, so if you are using WhatsApp Plus then immediately uninstall it and install official application from official site of Play store.
Now Whatsapp Plus also banned from WhatsApp inc. In official FAQ page of whatsapp is written:
WhatsApp Plus is an application that was not developed by WhatsApp, nor is it authorized by WhatsApp. The developers of WhatsApp Plus have no relationship to WhatsApp, and we do not support WhatsApp Plus. Please be aware that WhatsApp Plus contains source code which WhatsApp cannot guarantee as safe and that your private information is potentially being passed to 3rd parties without your knowledge or authorization
So my dear reader please install Authorize version of WhatsApp.