Используйте приложение APKPure
Историческую версию UDF Stickers можно получить на Android
UDF Конгресс Наклейки
How To install
1 - Update Whats app with latest version above 2.18.327
2 - Download and install Stickers App
3 - Open App and click any sticker pack
4 - Click Add to WhatsApp Icon . if success a success message will show . if any error on whats app or WhatsApp is not updated then no message will not appear
5 - Open WhatsApp and go to emoji section and you will find a new icon for sticker
6 - you can click any pack in the stickers list and star sending stickers
Enjoy
Please keep installed to get new stickers after updates