To update WordPress Core from BlogVault dashboard:
Step 1: Go to BlogVault website and sign in using your email ID.
Step 2: On the BlogVault site listing page, select the website of your choice.
Step 3: It'll take you to the Site Detail page. In this page, you can find card to manage updates for Plugins, Themes and WordPress core. Select WordPress tab there.
Step 4: Click on Update button
Step 5: Once updated, you will get a notification on your dashboard.