I fucked up Seagate 2TB Seagate USB drive

Hi there, I connected perfectly healthy Seagate mini 2 TB USB drive to my Synology DS923+ NAS drive. I moved files back and forth and everything was fine and dandy until I just unplugged a drive and went to connect it to my iMac. Sure, NAS software said, next time unmount drive before unplugging it. But that was after the fact. Mac can't see it no matter what. In Disk utility it's there but can't be mounted, erased, formatted, read or written. What can I do? Will PC be better in connecting to that drive. As of now it acts bricked.