I have just paid my account for 0,79€ via PayPal and it clearly stated it was one year i would buy additionally to my remaining time until 17th May.

However, after paying and re-registering my account in Wazapp, it says the account expires on 17th May 2015 - so two years have been added.

Is that a bug in Wazapp or did WhatsApp accidently increase my expiration date by one year too much?