As of March 2nd, 2020, the Instagram platform will be deprecating its API. This will directly affect the Instagram feed section in all WordPress & Shopify themes. Read more on how it affects your theme here: https://fuelthemes.net/important-notice-instagram-feed-removal/

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Icons are not working on Firefox

This issue is caused by your font headers not properly set by your hosting. Here are some  pages to forward to your hosting:

http://stackoverflow.com/questions/2856502/css-fon...

http://stackoverflow.com/questions/5008944/how-to-...

http://davidwalsh.name/cdn-fonts