1. you already asked a similar question in another post - to fix you issue you just need to permit cross domain resources in your .htacess
2. To disable fontawesomne you would need to remove every reference to every icon and then create template overrides to removes fontawesome which is a massive amount of work and not what you want either really since you would be removing all icons from your site. Fix the root cause issue in 1. above.
Regards, Mark.
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