The are several reasons why you can't access that folder:
1) maybe FUSE fs is used by another user and it mounted in /DataVolume/shares/fldr, in this case noone (even root) can't access this folder.
2) some mismatch in GID/UID, look at:
stat /DataVolume/shares/fldr
, and
id user
to check this;
3) maybe this is soft link to another folder (or file), and youre user has not read permission to it.