The end of free Whatsapp from free vouchers and they decided to do it at Valentine Day

https://support.knowroaming.com/supp...atsapp-feature

"Beginning on the first day of the new policy announcement, February 14, 2018, all registered KnowRoaming customers carrying a prepaid credit balance in their KnowRoaming account will be given 30 calendar days of bonus WhatsApp data usage.

Note: data packages purchased on www.knowroaming.com and added to a registered KnowRoaming account with a voucher code are not considered a prepaid credit purchase in the KnowRoaming app and will not provide 30 days of bonus WhatsApp data usage.

Any free credit vouchers applied to the account, including the free $10 credit received with the Global SIM Sticker, do not provide bonus WhatsApp data usage."