We're working on a checkout page and is arguing about the header.

One side says that we should remove the header and only show a logo to direct the user to the 'complete order' button.

The other side says that we should keep the menu, cause we don't want to confuse the user and don't give the user the opinion to go somewhere else, either to get more products or don't complete the purchase.

I think both the ideas are good but.. ye. What do you guys think, any tips?