Translation of Hilflosigkeit

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.
Maybe we would need to say install our dictionary as a software? But I would say instead of install, use our dictionary as a software. So bottom line. If I use the singular form for newsletters and websites, I am on the safe side for both?
My company is a consulting firm for IT systems for banks and insurance companies. I work with system analysers and bank employees. It is a big challenge, technically and commercially. I love it.