Encryption by Kruptos 2

For right now only three stars, and that's only because it still works on my laptop. I have used this app for years and rely on it. Everything worked fine between my Windows 10 laptop and my Samsung S8 Android 9 phone. Then I bought a Samsung S20 Android 11 phone. Everything still works fine on my laptop, but every encrypted Word file is rejected upon attempting to open on my new phone. I've tried opening after copying a file from One Drive, after a USB cable load to my new phone and using Airdroid for wireless transfer. Nothing works. Interestingly, everything still works fine on my old phone with Android 9. I would upgrade to five stars if I could figure this out. There would appear to be a big problem between Kruptos 2 and Android 11. And yes, I'm a paid user. Dropping to one star. I have never heard back either here or from an email to the developer. Given the age of the app, I suspect they just don't care any more. Too bad, because it used to be a really good cross-platform app.

Hasn't been updated in years. Absolutely useless as you can not decrypt larger files at all, crashes on every device. Devs don't care. I pointed this out to the support and it was supposed to get fixed. 3000 years ago... Edit: I'm writing this as somebody who bought the desktop version to be able to use it on mobile.

This app doesn't work with my Samsung s21 Ultra. I paid for this app, it still works in my windows 10 laptop. Use to work on my Samsung s9 + cellphone. What's the the story?.