I got the link to the $40 Office Pro 2021 (with free PaintShop Pro) in my email today. It looks like the link is for anyone who stumbles on to it (the same link as original one in the first post of this thread, I think).
https://www.softmaker.com/en/softmaker-office-promotion
If you're interested it might be worth looking into. I can't guarantee the link works for everyone — I'm guessing it's for the U.S. (And you have to buy the subscription NX version if you want Android support — at $30 a year. It looks like the Android version is free at the Google Play store also?)