Load the Google fonts locally instead of the Google servers.
Things to consider:
Some of the changes need to be done in the parent theme files which means that the changes will be overwritten with every theme update.
Edit enqueue-front-scripts.php file present in jupiter/framework/functions folder. Go to line 105 and comment the below lines of code:
THEME_JS . '/plugins/wp-enqueue' . ( $is_js_min ? '/min' : '' ) . '/webfontloader.js',
Commenting the above code will stop loading the Google fonts as well as the TypeKit fonts.
Edit general-functions.php file present in jupiter/framework/functions folder. Go to line 406 and comment the below line of code:
wp_enqueue_style( $font_family, '//fonts.googleapis.com/css?family=' . $font_family . ':100italic,200italic,300italic,400italic,500italic,600italic,700italic,800italic,900italic,100,200,300,400,500,600,700,800,900', false, false, 'all' );
Commenting the above code will stop loading the Google fonts.
Set your google font in Typography section in Theme Options or any shortcode (such as Fancy Title) like the way you used to do before.
Screenshot Fancy Titles:
Download the fonts from Google Fonts website here: https://fonts.google.com
Choose the font and then download the fonts like shown in the screenshot below:
Generate their font face using this tool: https://transfonter.org/
For more information see: https://crunchify.com/wordpress-google-fonts-load-locally/
Add the generated font face and font files to your child theme like explained here:
Note: Below I have attached a child theme which consists of Open Sans fonts which cover steps 4, 5 and 6. If you add this child theme, you still need to complete steps 1, 2 and 3.