Error in the App

This is a good tool, BUT there is a big error...I spend time entering a lot of new words to an existing list. It always indicates there a problem saving the new words. I click the Back button to give up. Yet the number of the list shows all the added entries. When I turn to the flashcards, the number changes back to the show that no new entries, and it is true that all my new words disappeared.

Ted in Chicago about Flashcards by Dictionary.com, v2.0