Hello,
I saw the screenshot you attached.
1) To remove brands you need to Go to Theme Settings >> Footer >> Prefooter text area.
And you need to remove everything from there.
Screenshot for Clarification: https://ibb.co/MBCXGwL
2) Please check how it works with the default WordPress theme because the payments are woocommerce functionality and our theme doesn’t influence.
3) Please provide some relevant screenshots of how you want to customize the shop page to check it myself and help you out accordingly.
Best Regards.