Go to your WordPress admin site and find the Plugins page in the left hand menu. Search for Miappi there. Install it, activate it, hey presto you’re up and running. 

Alternatively, download the WordPress plugin from here: https://wordpress.org/plugins/miappi-social-wall

Otherwise, at the bottom of the Embed page of your Miappi Dashboard there is an embed code for you to copy along with further instructions!