I don't think this is supposed to be an empty list. I found the feed that its looking at.
Not sure how this is being parsed that it doesn't see the list of domains
I know what comes from hail a taxxi bsed on the name of the watchlist being populated and the name of the threat feed
If you are using this example:
then just wait for a bit. In our case it took quite some time until the Server delivered all the values. Also don´t Forget to put in the Collection Name. We tried a few different Settings and it only worked with the correct Collection Name. But i guess the most important part of it is that it takes some time to deliver all the values to your System. But it definetly works.