Fonts not being found

I seem to be having an issue with the fonts available and trying to install them into Sitely.
I started creating a new project on my desktop, all the fonts were there, and I selected which fonts I wanted to use. This morning, I wanted to make some adjustments to the website and used my lap top, when opening the Sitely file on my laptop I was faced with a prompt stating that a particular font wasn’t installed and the style would be replaced if i continued, so I elected to install the font, but it doesnt appear to be letting me intall it into sitely.

Just for info, the Font I want to use is Astute, which is on the laptop after checking the fontbook app.

So the first pop up is this

So I click on the font name and press install now, then this pop-up appears

But the font isn’t in the list. If I proceed, the font is replaced; if I don’t proceed, the file will not open.

Can anyone please point me in the right direction to what I am doing wrong?

Thank you

Simon.

@Sicherry, the last popup is asking you to import the Astute font into Sitely.
So I gather the Astute font is not in the Google Fonts listing. Hunt down where the Astute font is on your laptop to make sure. Then import it into Sitely by using the “Open” button on the last popup window in your post.