Hello,
After reading your post, I did set up an account, but I could not find how to watch the accessibility category. What I did see was a notifications button and I selected watch all posts, I hope that does the same thing and I will get all Emails from that category.
By clicking a watch
all posts under notifications you most likelly added some topic
to your watch list.
If you would like to make sure I suggest rereading the part
explaining how
the discourse UI is structured and how
to configure your watched categories.
You will be able to discover watched tags and topics in there.
Greetings
Peter
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