Translation of luftig

I hope that it is clear. You may need to press the regional button next to each input field. Then the control panel will open, there you must choose a checkbox. The value will be added to the text. The active input field is marked in green.
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?
I have learned German for one year and I would like to intensify my studies. Do not know how yet... It is very difficult at my age to start new projects in life. I am over 75, did I tell ya...