Favicon + Contact Form 7

Hi,
I’m experiencing issues with my website’s favicon.
It’s suddenly showing HostGator’s instead of my brand logo.

On top of that, contact form 7 is not working on the button next.

Please see the form here > redbriks.com/ifa
As you’ll notice, the next button doesn’t work.

My website: redbriks.com

Thanks so much for your help !

Best,

Julian