Font displaying weirdly?

[Escapades]

I wasn't sure where to post this but, yesterday I installed the light version(s) of Helvetica fonts on my laptop and now (on Tumblr, usually) the fonts that are supposed to be displayed as Helvetica, I think? are coming out in weird characters. (pic below) I circled them. It does that for seemingly every page that I guess requires that font? Tumblr uses Helvetica and Arial as its fonts so I can only assume the problem lies there.

Is there any way to fix that? without having to restore or anything since I don't really have a restore point.

 

[FZ21Z]

Have you tried deleting the font?

 

[Escapades]

Have you tried deleting the font?

Yep, I've tried deleting the font and my font folder says that there are absolutely no Helvetica files either.

 

[FZ21Z]

Assuming you have since visited the site after deleting the fonts, and the issue still occurs, try clearing your history and see if it still exists.