Linking Social Media icons from site to Social Media accounts

My site is http://www.beachbarlife.com, currently in maintenance mode. I can’t comprehend how to link my Social Media icons to my Social Media accounts. Presently both Facebook & Twitter links go to https://beachbarlife.com/## which is the site’s home page. My physical home page URL does not have the 2 # signs.
I’m using Yoast premium plugin. I have all SM profiles published in the Yoast Social SEO area. (see screenshot social) However, when I click on Facebook settings and I’m taken to that page (see screenshot social1) I have no idea what to do next what information or where to get to publish into empty fields. Any help would be appreciated. Cheers, Jim