URGENT: Font Awesome Icons disappeared

Hello,
i bought the API and got your plugin running. I see the successful criticalcss id.
The problem seems to be that in the inline css instructions, the font awesome icon “codes” are being written without the necessary “\”. For example the line for the cart icon is .woofc-icon-cart3:before {content: “e902”;} instead of “\e902”, resulting in having the actual letters ‘e902’ displayed instead of the icons! Same for every other icon.
How do i fix this? please help it’s urgent since it’s online right now.
Thank you for the support.
Luca

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