For months, I couldn’t delete this entire folder from my backup drive and it had me clawing my hair out. I tried those force-delete apps and all and none of them deleted a single file. Today, I figured out a way to delete these files with a bit of backdoor work. Basically, you have to trick the file to think that you are the owner. Here’s how:
Click on the picture to see it better.
If you follow these steps, the file will be gone in no time! And don’t worry. It gets easier as you repeat the steps. Good luck!