To check what plugins and themes are active on your WordPress site:

Step 1:
Go to the BlogVault website and sign in using your email ID. 

Step 2: On the BlogVault site listing page, select the website in which you want to perform this operation.

Step 3: It'll take you to the Site Detail page. In this page, find the Plugins and Themes card. Click on Manage.

Step 4: When you click on them, you will be taken to a page with a list of your plugins. You can filter the plugins you want to check by selecting Active on the drop-down beside the search tab.

Here you can also check the Active, Inactive Plugins or Themes, as well as plugins or themes that can be Updated.

NEXT: How do I activate or deactivate plugins or themes?