digitax-seo-digital-marketing-agency-themes-3J7CN4R- Not able up upload my logo

I have downloaded the theme elements-digitax-seo-digital-marketing-agency-themes-3J7CN4R- and implemented on http://new.aasimmistryllc.com/ . I am not able to change the logo the default logo of digitax only shows. Can you please help how to change it

Hi

Please check documentation here:
http://demo.ovathemes.com/documentation/digitax/#h4_add_new_header_h4

Thanks