whatsapp-for-linux from home:redwil:misc:rpm project
Select Your Operating System
Add repository and install manually
For 15.4 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:redwil:misc:rpm/15.4/home:redwil:misc:rpm.repo zypper refresh zypper install whatsapp-for-linux