I’ve never had a Facebook account so I don’t know what I am looking at in your screenshot. I can see that the partial word “PARALL…” is preceded by the word “BY” so from that I can only guess that “PARALL….” it is the author of the post perhaps?
In the theme’s ‘header.php’ template, up near the top, there’s this meta tag…
<meta name="author" content="Parallelus" />
That’s the only place I can think that Facebook might be getting our business name from. Try removing that line, or replace “Parallelus” with your business name, see if that helps.