Notebooks for iPhone Answers

Hi,
I have an account with godaddy for dav using http://onlinefilefolder.com/dav/

I was able setup the Notebooks app to sync using iPad the first time without a problem. Now every time I try to resync, it just sits and has a spinning icon and never updates.

When I try it do it on my iPhone, it just locks out the phone entirely.

Any reason why and what can I do to fix this?

As a note: it will do a new sync if I create a new folder and try syncing to the new folder, but then again, it won't resync to the same folder.

Help!