Thanks. I was able to get in this morning.
The usage limit of only 20 queries seems pretty low. That's barely enough for me to try this out and see what it can do.
It also seems that following some websites is difficult. For example, I wanted to follow Nomad List and Weather Spark, but neither came up in the list of options. I had to use a query to search for those sites before I could add them to my network.