Social Media Icons - Mobile Version

Hi guys

It's been a good couple of years since I've had to adjust the code of our site (https://reclaimdesign.org) and I wanted to add back in our Facebook social media icon just under the menu. I've found the original snippet I made and uncommented the Facebook code and it shows fine on desktop, but on mobile it is not visible, and I am not sure why or where else to check. The css seems fine to me. Please can you assist with pointing me in the right direction? Thank you very much. I've added dropbox screenshots below.

Michael.

https://www.dropbox.com/s/hcm76a329hmbt9u/screen1.png?dl=0

https://www.dropbox.com/s/djqh8p0t42xowts/screen2.png?dl=0

https://www.dropbox.com/s/k029bd9qkqxgfsk/Screenshot_2023-03-09-10-21-49-54_3aea4af51f236e4932235fdada7d1643.jpg?dl=0