If your Guide isn't transitioning to the next step, ensure that the correct button action is applied. For information on button actions, see Guide Button Actions.
A guide can also transition when an element is selected. In this case, there are no transition buttons. Ensure that the "Advance on Element Click/Hover" is toggled on in the Behavior tab of the step's container settings. If you want your Guide to transition on an element, ensure that the element exists and is the same for all users.