Make small changes to the WordPress website

Good afternoon! There's a WordPress site. It is already set up and working normally, you need to make a few minor corrections.
(1) Remove payment through cards
(2) add the basket icon to the header indicating the number of goods
3) add the button "Buy" to the product in the catalog. Adding to the cart works, if you go to the product card, you need to do in the catalog.
4) Add addresses and telephone numbers to header
Text verborgen
Phone: Text verborgen
Fax: Text verborgen
5) remove the test mode in the header
(6) We'll draw the slides, we'll add them later