To add "ок" stickers to WhatsApp follow these steps:

• Download the Sticker Maker app from Google Play (Android) or from App store (iOS)
• Download the "ок" sticker pack if the download doesn't start automatically.
• Click on downloaded file d2bcf005_f03f_45ed_be8d_c52e9c617ed4_by_sticat_bot.wastickers and open it in Sticker Maker app.
• Click "Add to library" and then "Add to WhatsApp". Ok.
• Stickers added to WhatsApp! Thank you for using our site.