All of my icons disappeared, I need immediate help!!!!

Hello Everyone,

I logged onto my website today to find out that half my icons such as social media icons have disappeared.

Here are some screenshots:
https://gyazo.com/2608170e2aecfe64a0cba15892183c95
https://gyazo.com/bc4f65544500306d3926466187d25e2e
https://gyazo.com/179aacb6ec558ae64e333946ead0a8f0

This is my web URL so you can look at this yourself – http://www.otakunz.co.nz/

Please help me, this may harm my websites reputation!

Best,
Charles

https://forum.tagdiv.com/topic/strange-chinese-symbols-replaced-icons-and-arrows/