My phone won't let me download pictures, create any new folders, move or copy files to other folders, and chrome keeps deleting my tabs. When I go to delete files it says external storage files can not be removed to recycle bin. When I tried to join this amino it said my storage is full when I still have 723 Mb free. When I try to download a picture through chrome it immediately pauses the download and when I try to resume it it pauses again. When I try to take screenshots it says can not take screenshot due to security policy in a little grey bubble near the bottom of the screen. It won't let any apps save pictures and whenever I restart the phone all my settings are reset to default and my app locker is disengaged. It won't let me download or update apps either and I get an error 963. Any help is appreciated xc my phone is a Samsung Galaxy J3 running Android 7.0