Try updating the NTFS for Mac tool you have installed.
Is your new MacBook Pro Apple Silicon based or has a different operating system? It's possible that the NTFS for Mac software isn't compatible with the new macOS or chip on your MacBook Pro. You can check its official website to see whether your Mac is officially supported and install the latest NTFS driver update if available.
If it still doesn't allow you to add new files or delete old files, try iBoysoft NTFS for Mac. It's fully compatible with macOS Vetnura ~ macOS 10.13 High Sierra and built for both Intel and Apple Silicon Macs. It enables write access for NTFS drives on Mac, allowing you to do everything with the files and folders inside: add, delete, edit, rename, etc.
If you want to give it a try, click the button below to grab the free trial.