Davinci2 - Problems with translation

Hello all,

I have a problem with translations of Dav2 template - everything works correctly except:

1. CATEGORIES - the header above the menu when going to Home>Products, even when I change the text in header.php the text remains unchanged.

2. Thank you page:

Is there any way how to rename the Shipping address heading? Everything is translated except it. Also, the link for Contact us is not correct, is there any way where can I change it?

Thank you very much for your help.