Whatsapp crash

HI everyone, so I have been using what's app for about 3 years now. And all of a sudden it started to crash. I click the app icon. It takes me inside a white blank page and then the next second I'm back in the home page. Please help me. I have tried reinstalling it like 4 times and dint know what to do. I rarely uses Imessge and all my important messages and documents are stored in my what's app. Please can some help me asap