Windows 10 won't let me in my folder, how long???

Question

Access rights

My Windows is completely crazy. Rewrote folders from user2 to a USB flash drive. Didn't get overloaded. I'm trying to log in with the same user - it won't let me.
Admin - just does not let.
I look at the properties of the folder - Security
"Everyone" has Full access, and other permissions. There are no restrictions, but the permission checkboxes are gray.
Added user2 there, set him the same Full access, black checkmarks. The patient also does not show signs of reason.
I press Advanced
Folder owner user2
user2 - Full access (and other permissions except for special ones)
I look Active permissions - also full and the rest.
I press Audit, user2, I add Full access there and recursively install. Writes that she could not, denied access.
What to do?

Answer 1

This is probably a problem with a flash drive, yes NTFS, large files were supposed > 4 Gig
Winda swears at me for every insertion of an SD card that they say there are problems with it, but it doesn’t find any problems when checking, I already skip the check automatically.
I also swore at the flash drive, now I checked - I fixed something, I go into the folders, but in the files - zeros. Flash 128 gig, yes, they write about it that it is unreliable, it probably failed during recording.