I'm trying to study from the Reading and Writing Chinese textbook, but it stopped adding characters after the first 50 section. The second section claims to be in the process of adding new characters, but it isn't. Any ideas? Thanks.

I gave this a test run, and it looks like the list is adding words successfully. If you start studying and press the (+) to manually add a word, does it do this for you? There are 70 words in your queue to review which might be why you weren't noticing any new words being added yet.

I should have said Im using the android app. The website says I have 70 items due, but the app says zero.

@laowaiphil Try checking your filters to make sure you don't have any enabled on the application. If everything looks normal there, I would recommend using the "Restore Data" button located under the account header. Hope that helps sort everything out!