Update Twitter Icon

Currently I am new to WordPress, I am liking this plugin as it is already integrated into the site, but I notice “twitter” is being reference along with old icon’s which it should be “x” since that is the new site. Before I use this to promote my social media pages is there a way to update this information or should I delete this plugin and find something else to handle socials media pages which I would like to be on the footer of the page.