change subscription for secure line VPN from monthly to yealry

wondering how to change my secure VPN line subscription from monthly to yearly. ???
also wondering the cost…cannot find how to do this ???thanks

Hi, first you will need to cancel your monthly subscription, wait for it to expire, and then purchase the yearly one.
Step-by-step guide to cancelling a subscription:
https://www.avast.com/faq.php?article=AVKB218