Problem with Steam Usernames

Hi there,
I just started using this plugin and I’m really excited that Steam users can login. However, whenever one posts from their account, the username is an extremely long string of nonsensical characters.

For example: https://clanofthegraywolf.com/new-login-options/#comments

In the comments section, that user comes up as Steam_User_etcetcetc.

Is there a fix or did I do something wrong?

https://www.ads-software.com/extend/plugins/wordpress-social-login/