ROBOCOPY and UGREEN NAS DH2300

I was editing data when I noticed that my Network Attached Storage (NAS) hard drives were thrashing.  Technically, that is what is supposed to happen when configured to update 'real time'.  I have been a long-time user of a batch file to execute ROBOCOPY.  It is clean and efficient, one of the better items Microsoft has created.  Go figure, right?  Anyway, being who I am and what I have done in my career, I got the idea to edit in Windows on two separate NVME hard drives (much data and large files) then execute a batch file to run ROBOCOPY.  This consolidated all data onto one spin-drive in my Windows PC.

The first time I did this, my DH2300 NAS was active.  All configured SYNC and BACKUP tasks indicated 'BAD' and would not execute.  I had to delete the NAS tasks and recreate them.  After several attempts and recreations, I thought that I might shutdown the UGREEN NAS DH2300, run the Windows PC batch file for ROBOCOPY, then start the UGREEN NAS back up in order for the UGREEN NAS Client Sync & Backup app to 'do its thing'.  WRONG!  All tasks indicated 'BAD' again.  I've made it a practice to delete the NAS Tasks after running Windows ROBOCOPY then recreating all seven NAS tasks.  Only then will these properly execute.

Would anyone have any idea as to what is going on to cause this?  I've asked on UGREEN's FB resource page, and they are suggesting that it is a ROBOCOPY issue (Pass-the-buck = EASY).  I suppose that's possible, BUT I've used ROBOCOPY for YEARS.  It skips over any unchanged file and only changes/updates files when changed.  Still, I must ask.