I am seeing the same thing here when I test. Either the api or the configuration that Alex has setup must be limiting this to 10 days versus the 100 tweets that previously defined the limit. I have moved this thread to the Web Data Connector area where it is more likely to have engagement with other users of the connector and where Alex might be able to see/respond as well.
Have you tried setting up your own local connector and configuring this? If you are going to rely on this for ongoing reporting then I suggest setting up your own local instance of the code per the instructions.