Verb conjugation of "débrancher" in French

In life you have to decide what is best for you. Each time I go to a new place I ask myself whether I could live in such a place. But once I return home, I know that I made the right decision by staying in Norway.
Could you please read the following offers in a critical manner and confirm it before I will send it? I have also mentioned the warranty and the software in the offer, because it was requested by the customer.
But we learned only the general rules such as personal pronouns and articles, accents, some verbs and general vocabulary. I also love the sea and the sun, and the beautiful mountains too.