Hi,

To do that, please do following steps:

1/ Install & activate plugin Use Any Font

2/ Go to admin page > Use Any Font > get a free API key ( free API key will allow you to upload a font. ) and upload your font. When you upload font, please set for that font a font name to call in CSS. Example: MyCustomFont

3/ Add more this code to Customize > Custom CSS to change your font for your copyright text:

\
#footer-copyright *{ font-family: 'MyCustomFont'; }

Note Important:

Change 'MyCustomFont' on the above code to the font name you did set on step 2.

Best Regards,

PenciDesign