What are the steps for Avast Renewal process?

  

Right after updating my windows with its latest version, my installed Avast antivirus is throwing some issues. Honestly, its problems force me to pull my hair out. I just wanted to complete Avast Renewal process so that I can access Avast properly. By doing so will also let the Avast perform better. So, please anyone help me to renew Avast program.