Redux Framework Warning

On the template it is not possible to change the font, I receive the Redux Theme Options Framework Warning errors, Font Family select form is not displayed. What’s the problem?
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Redux Framework Warning
select2-css CDN unavailable. Some controls may not render properly. Please wait a few minutes, then try refreshing the page. Unable to load some remotely hosted scripts..

Redux Framework Warning
select2-js CDN unavailable. Some controls may not render properly. Please wait a few minutes, then try refreshing the page. Unable to load some remotely hosted scripts..

Redux Framework Warning
ace-editor-js CDN unavailable. Some controls may not render properly. Please wait a few minutes, then try refreshing the page. Unable to load some remotely hosted scripts..
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Pzsolt

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