Hello,
Icons – Please save the Theme Setting, update files in CSS generator if you used them and clear your cache.
Header – Please navigate to Woodmart > Header builder http://prntscr.com/iyd2pe
Choose the proper header type (your current) http://prntscr.com/iyd333
Modify elements as per your needs: http://prntscr.com/iyd3h3
Take into consideration that there is also the mobile view of your header http://prntscr.com/iyd3v3 check all the elements there.
Footer – you can change the content in the Appearance > Widget > Footer columns. If you see HTML block widget, find this block and edit it. https://xtemos.com/docs/woodmart/html-blocks-2/
Best Regards