GIPHY can help brands and artists get their GIFs into Whatsapp, however, WhatsApp does use multiple GIF providers so not all users may see your GIFs.
If you don’t already have an account, you can apply for a Brand or Artist channel here: giphy.com/join/apply. Learn more about the requirements for Brand channels and requirements for Artist channels. At this time, only GIFs from approved brand and artist channels on GIPHY can become available in WhatsApp.