My Registration Page Has No Register Button
All Packages, including the default, free ‘Register’ Package must be toggled ON from the Packages page before they appear on your event’s registration page.
To check, go to Packages and look at the checkbox to the left of the ‘Register’ package? Is is checked? If not, it will not appear on the page.
This feature is so that you can create event web pages before you allow registrations, or so that you can remove the Free Register package (toggle OFF) and replace it with ticket(s) or other Free Packages instead.
The Register package is toggled ON by default if you specify (click the checkbox) you will be allowing free registrations when you first create the event. If you decline this, it will be toggled OFF by default.
Here is an article with more info on Packages: