Samsung galaxy tab e nook and calibre

Got one of these and hope there is someone out there who can help. Calibre recognizes the device and says that I have transferred books but the transferred books dont appear in the nook library. With past nooks I have had , never had a problem.

Any ideas? In the past the nooks have shown up on the desktop (mac) but not this one. Any help or ideas is appreciated. Thanks

Rjherald

Rherald@Indy.rr.Com