WhatsApp on iPad 3.2.2

Solution Works on an jailbreaked iPad (3G):

Install Version 2.5.3 and Register.
(To receive Sms install free swirly SMS App. From cydia)

Over WhatsApp you’ll receive an automated Message that you must update to the latest Version of WhatsApp 2.5.12)

Install Version 2.5.12 and it’s working fine! No reboot needed!