To Install SSL from CWP admin ,
Step 1 . Login to CWP admin panel
Step 2. Search SSL on Search Bar .
Step 3 . Click On SSL certificate . ( Take a look below screenshot )
Step 4. if you found SSL on list then check SSL is working on your browser . if your website SSL is not working , Delete that SSL from list to install Fresh SSL . ( look on screenshot )
Step 5. Now click on Auto SSL [ Free ] then select user name for domain from drop-down then select domain name from 2nd dropdown then click on install . Final Wait for 2 to 5 minutes . clear your browser cache and check website with https://
Here is screenshot