I'm sorry, but what you want doesn't make any sense.
Whatsapp uses TCP 443 (HTTPS) to pass the majority of the connection traffic but it also uses TCP 80 (HTTP). If voice is used, then ports 4244, 5222, 5223, 5228,50318, 59234 & 5242 are used. UDP Ports: 34784, 45395, 50318, 59234.
I am not a Cisco Meraki employee. My suggestions are based on documentation of Meraki best practices and day-to-day experience.
Please, if this post was useful, leave your kudos and mark it as solved.