In case this does not work out, try for other stated methods below.
Once you have the verification code, just enter the same on WhatsApp and proceed as usual.
Click the three dots at the right corner, and choose WhatsApp Web.
So to empower this component once more, you need to do the essential changes in the Settings.
You may also type your country name in the search box instead of scrolling down.
So, here are two ways to do it.