Canonical - WPMU Site Check

Was chatting with LIVE support and they had to go. They said open a ticket with this thread - https://premium.wpmudev.org/live-chats/2017/02/general-wordpress-and-buddypress-840-97/

Ran a scan for http://donendavisplasticsurgery.com - here https://premium.wpmudev.org/wp-checkup/ - and it says a lot of things - the first issue says I have duplicate canonical tag

so we were trying to disable it.

Couple of more issues I need help with

1. Robots.txt file - how to add sitemap to robots.txt
2. Prioritize visible content - Above the fold optimization - how to do this

Thanks