A family of Microsoft word processing software products for creating web, email, and print documents.
I think you've inserted combo boxes instead of dropdown lists, which are next to each other on the Developer ribbon:
Both of them act as dropdowns. The difference is that the combo box allows users to type into the box at the top, while the dropdown list forces the selection of one of the items in the list. (The combo box is called that because it's the combination of a list and a text box.)
Also, since these are both content controls, you should not use the Restrict Editing pane to protect the document. That protection is intended only for legacy form fields. Instead, select all the content controls and all text that should be protected from editing, click the Group button on the Developer tab, and click Group in the button's menu.