With WhatsApp, they will not accept SMS verification the first time if you are on a VPN or shared proxy. You need to request a phone call verification; after that, wait 1 minute and do the SMS verification again. Doing this will give you an SMS code on 3rd try.By the way,
I tried to verify WhatsApp, but I got an error - we couldn't send an sms to your number, try in 1 hour.
I did a Google search for solutions, and saw that I should send an sms to the number and see if it works. I did. I sent an sms to the number your system provided. But the SMS didn't arrive on the dashboard.