WhatsApp Number Could Not Be Verified, It Says Unofficial Version

I can't get a WhatsApp verification code. I enter my phone number to register for WhatsApp, but I receive a message saying "The number could not be verified. You are using an unofficial WhatsApp". However, I am installing the latest version from the Google Play Store. I send messages to the support line at least 2 times a day. From there, it is always the same answer. "You are using an unofficial WhatsApp" message. I think the robot answers on the support line. I want to talk to a human being. My number is +905052523434 please help.