Why is there no order button on the menu page?

The menu page is for browsing; the Order tab is the one door into ordering, showing only the ways you have switched on.

Because the menu tab is for browsing only — there are no Add buttons on it by design, so a guest can read the menu without being pushed into an order. The Order tab in your guest pages is the one way in: tapping it opens a small chooser with up to three buttons — Order to your table, Order for collection and Order for delivery — showing only the ways you have switched on (with just one way on, there is no chooser and the guest goes straight in). The same chooser opens from the Order card on your venue page and from the one-line Ready to order? pointer on the menu page, and a guest who scans a table QR code skips it entirely.

If you cannot see the Order tab either, check three things on Settings → Order & Pay (the gear at the top right of the Orders screen opens it): the Order & Pay master switch is on, at least one way of ordering is on (at your table, collection or delivery), and Show the Order tab and card on your venue page has not been switched off — it sits beside Let guests type their table number in the Go live section. The full walkthrough is in How do I set up ordering at the table? under "How guests start an order".

Related: How do I build my menu and share it with guests? · How do I stop food orders when the kitchen is closed?