Verb conjugation of "handcuff" in English

I am asking you to give me a reply as soon as possible so that we can proceed. Have you ever tested the new version? Many users are waiting for it, and are sending me lots of emails about it.
Thank you for your email! A little question about yourself. How old are you? I think the Americans are using the word color and not colour, but I understand if you are not sure about it.
Thanks for your help, I was on holidays in Galicia, it was just beautiful, I had a long weekend, and have taken off for a few days. And what did you do on last weekends? did you stay home?