I have a Raspberry Pi connected to the IBM® Watson™ IoT Platform and two IBM® Cloudant® NoSQL DB services setup for storing device data. The bucket interval for both the DBs is setup as day. For some reason a new DB is not getting created for the next bucket interval on both the Cloudant NoSQL DB services. I was looking for some insight as to why this might be happening.
There was a temporary problem with IoT platform cloudant database creation around the time you posted this question. That issue has been fixed, please let us know if you still are experiencing the problem.