Zoho applicaiton will not Import CSV, XLS in any browser

Zoho applicaiton will not Import CSV, XLS in any browser

I've spent hours trying to bulk import 7600 entries into the application.  5900 were successfully added.  The application never accepted the full list but did accept ~1000 at a time until 5,900.  Now, it will only accept 2 per addition.

What's going on with this?