Location Access Error

I recently reformatted my PC, and before doing so I backed up my Scrivener projects through Yandex Disk. I am now trying to open up the backed up “.scrivx” files, and it gives me this error: “LOCATION ACCESS ERROR… CANNOT ACCESS [file location]… File is not writable: Access is denied. Auto-saves need write permission to your project.” I’ve tried the official suggestion of looking under the “security” tab of the main folder and making sure that I have the proper permissions, which I do, and the folder is not marked “read-only”. What is wrong and what can I do?