Leon, here’s an “almost” work around if you’re able to roll your sleeves, put your diving gear and tweak images:
– FTP on your site and download the content of /wp-content/plugins/ultimate-social-media-icons/images/visit_icons (that’s where the hover icons are in english)
– Fire up an image editor of your choice
– Duplicate the images as a backup in case everything goes wrong
– Open each image and modify it to covert the english text with yours then save
– If you haven’t fainted by now, you’re good to go… : upload the modified images back on your Website exactly at the same place where you downloaded your images and overwrite the existing one.
The “almost” work around is that even though you modify the icons, some pick there language from somewhere else. On my site it’s a mixed of french and english… ? So to John, if you’re able to pull the language from some icon, why not do it for all ! But I gotta give it you: it’s a hell of a plugin with many features, controls and works very well as described, kudos, BUT, there’s the language issue…