Go to WhatsApp Web and check the list of all open sessions. To know if your WhatsApp web is active on an unknown device, go to the three dots given at the top right corner of your WhatsApp window. How do I know if someone has logged into my WhatsApp?
How do I reset my WhatsApp verification time?
#How do i get my whatsapp number registration#
How do I get my WhatsApp registration code?