Greasy Fork is available in English.
Notifies you when a user comes online. This script will only work if have a tab open and navigated to https://web.whatsapp.com/ and have selected a person. The next time this person comes online you should hear a bleeb. *Bleeb*!
< Отзив за WhatsApp online notifier
It's for the online client web.whatsapp.com Has nothing to do with the windows client.
Whatsap Online Notifire
The script must be installed on Windows? For runing it, I must to be connected on whatsapp for windows and select an user that I want to know when is online?