Your WordPress website has a way to update the menu without using a plugin. You can add or remove links on your WordPress menu using the WordPress admin on there.
To update the WordPress menu on your website on there
- From the WordPress admin left menu you can click on appearance > menus
- From the WordPress menu page the top of the page has the name of the menu you are updating on there
- The left side of the page has different pages or posts that you can put into your menu
- The right side of the page has the menu
- To add a page or post to your menu you click on the page or post you want to add then click the add to menu button on there
- Then you click on the save menu button to save the menu
Then if that worked you would update and save the menu for your WordPress website on there.