[Help] 1 month old 3TB WD red read only issue

Hey, I bought a 3TB WD red that I plan on using in a synology box (once I have 3 of them). I have been using the drive as backup for with Veeam enpoint Backup free.

However last week, Veeam stop detecting the drive as a possible backup. I wanted to format the drive to be able to use it again as a drive, but when I do that it says that my rights are read only (I tried to edit the rights, but it doesn't work). Any ideas?