Posted: May 4th, 2018
1) Login to your Plesk Admin Panel
2) Click on SUBSCRIPTIONS or DOMAINS (Left panel)
3) Select the DOMAIN NAME or SUBSCRIPTION to be reconfigured by Clicking on it.
4) Scroll down and Click on CUSTOMIZE (right Panel) under Account
5) Scroll all the way down and modify the Expiration Date
6) Click on OK or APPLY to save.