Request info about "download files without notification" permission
Why I need of it? What is its role in Nostros?
So far this is not required directly on Nostros code, I'll investigate why this permission is there because we didn't even noticed it, (maybe a library?) Thank you for reporting!
Can you share an screenshot where you find this info?
I installed Nostros from f-droid (Izzy repo)

I'll leave this as reference for development, these are the permissions Nostros really requires https://github.com/KoalaSat/nostros/blob/aa9b47f1976f97e4f2b34b2da57340d826fc9c57/android/app/src/main/AndroidManifest.xml
It looks like one of the 3rd party libraries requires it but I can't imagine a situation where nostros will use it so we can follow this to force disable the permission
https://stackoverflow.com/questions/39353173/android-find-out-which-third-party-library-is-requesting-a-permission
Please remove that library if Nostros doesn't need of it. It might be potentially dangerous. Thanks for support and quick reply.
After one month and some updates suspected and potentially dangerous permission is yet there. Uninstalled.