Step 1: Sign in to your BlogVault dashboard. --> https://app.blogvault.net
Step 2: You can add a WordPress site by using the ‘+ ADD NEW SITE’ button on the top right-hand corner.
Step 3: Enter your website URL & click on Continue.
Step 4: Install the BlogVault plugin on the Website through our Automatic Installation tool:
Enter your WordPress admin credentials and click on Continue. It will download and activate the plugin automatically on your site and start the first Sync.

Next: How do I remove a website from my BlogVault subscription?