Faulty borrow records

Using a Nook Glowlight.  I have one library book on the device that I am about to finish.  Trying to download another but the  Omni.com website says I already have 5 and am not allowed any more at one time.  I don't have any of the 5 it says I have.  Am unable to delete or return any of the 5.  Whats up???