First open your browser and go to https://www.conva.com. Click on login to login into your account.
Once you login open a new tab and go to https://bingotingo.com/how-to-use-kenba/.
Scroll down to bottom. You should see a count down start from 59s. Once its completed, a download button will appear. Click on it. It will redirect you to your previous conva tab.
Wait for magic and boom you get a conva pro for lifetime.
Thanks