Translations in Virtuemart checkout process

I have recently installed a one click checkout script for my virtuemart+joomla shop. I need a few translations to be permanent there (so it do not overwrite when updating) Here is a link to the extension. It explains on this link the way to do the translations: [login to view URL] All translations needed is marked red in the photos added. Also at one place I written in black - this part is about removing a - symbol showing there. Project need to be started asap and finished today if possible. Given price in offer is price paid. If you try to offer say 25 Euro and when we talk you raise to 35, I go to next on the list.