Hi,

I see you've set the favicon icons in 2 places. One from the theme and one from another plugin.

Let's check and disable the favicon from the plugin ( I don't know what's the plugin you're using to do that, but I can see another favicon code appears before the close </head> tag here )

Let's remove it and I recommend you use a .png image with square size for your favicon - with size:  128x128 pixel.

If it still doesn't work, Please send me your WordPress site admin URL and admin account ( username and password  ) - in a private reply. I will take it a look at this to help you.  

Best Regards,

PenciDesign