Dear friends,
To get best experience using Long Path Tool please check tips:
https://longpathtool.com/blog/tips-how-to-use-long-path-tool
So generally speaking, ensure you log in as admin and run program as admin. Also set off “read only” for all sub-folders you trying to copy/delete.
You can manually select folder for deletion or use second tab of program to locate all long path files firstly and then delete them.
Have a nice day!