Hi Nikki,
1. To add link for the “Donate Now” button
Go to Appearance -> Theme Options -> Basic Settings -> Donate Now Button on Menu
add your PayPal link in href=”#”
<a class="donatenow" href="#">Donate Now!</a>
2. To add your social media links to social icons
Go to Appearance -> Theme Options -> Basic Settings -> Header Top Social Icons
add your links in link=”#”
[social_area]
[social icon="fab fa-facebook-f" link="#"]
[social icon="fab fa-twitter" link="#"]
[social icon="fab fa-google-plus-g" link="#"]
[social icon="fab fa-linkedin-in" link="#"]
[social icon="fas fa-rss" link="#"]
[/social_area]
Please check the documentation to customize the theme
https://gracethemes.com/documentation/charity-help-doc/
If you are getting any problem, please send your website URL and WordPress admin login details for temporary at [email protected] so we can check and assist you quickly.
Regards
Grace Themes