Site Title Showing Up Wrong in Search Engine Snippet

Hello, we are currently working on a website that has the RankMath plugin set up on it to handle the main types of Scheme markup and snippet editing. I have noticed, though, that this website and others we have worked on with that plugin do not show the site title properly in Google's snippet. The website is named LineLava and if you search it up you will see what I'm talking about. It shows the URL for the site title instead of the site name. I can't show an image, but instead of having LineLava Coatings & Services above the URL in the snippet, it just has "linelava.com" Now this is different than how I usually see sites show up, which is with the site name above the URL and not the URL repeated. While I'm not too experienced with Schema markup, I took a look and it all looked like the site name should be LineLava Coatings & Services. Is it not showing that because it's too long? Another website we have access to only has a title with 7 letters but it is showing the same behavior, so I'm guessing it's not length, but what am I doing wrong? Thank you in advance!