If you check your page after activation the Header Nav looks normal, but if you want onhover dropdown menu, you sould change the block's Custom Template from Nothing to Heytheme Nav Dropdown Light, Heytheme Nav Dropdown Dark or Heytheme Nav Dropdown Inv. You can do this if you click on Dashboard > Stacks > Header Nav. Basically here are one autonav block in this stack, if you don't have Auto-Nav block, delete the others and add one.
Cick on the Auto-Nav Block choose Edit and set the Sub Pages to Display to Display all. Sub-Page Levels to Display all. and Save it. Click on Approve Changes button. Cick on the Auto-Nav Block choose Custom Template and select Heytheme Nav Dropdown Light, Heytheme Nav Dropdown Dark or Heytheme Nav Dropdown Inv and Save it.
If you check your page after activation probably you don't have Search Block in the Header Nav Search Stack. If you have one, then it looks normal, because the theme scripts normalized it. When you add Search to this Global Area, and you don't choose Custom Template, scripts take effect after you saved it, and exit Edit mode. So the Search works fine, but if it's not enough for You, then set the block's Coustom Template to Heytheme Nav Search Light, Heytheme Nav Search Dark or Heytheme Nav Search Inv.
Go to Dashboard >Stacks > Header Nav Search Basically here are none block in this stack, add a Search Block to this Stack. Click on the Search Block choose Edit and set the Search Title this will be the placeholder text in the Header Nav Search simply, because we don't need a title here.. You need to set the Result Page ! Set the Submit Button Text and the other stuff then Save it. Now you click on Approve Changes button.
If you check your page after activation basically you have Search Block in the Search Page or somewhere else. If You don't have this block go to your Search Page, put concrete5 to Edit Mode.
Cick on the Search Block choose Edit and set the Search Title this will be the placeholder text in the Search Block. Set the Submit Button Text and the other stuff then Save it. Now you click on Approve Changes button. If you have one, then it looks normal, because the theme scripts normalized it. When you add Search Block to your site and you don't choose Custom Template, scripts take effect after you saved it, and exit edit mode. So the Search works fine, but if it's not enough for You, then set the Block's Coustom Template to Heytheme Search Light, Heytheme Search Dark or Heytheme Search Inv.
More information with images http://heywater.heytheme.com/installation/