If you’re trying to get a tag that is no longer there, I’ve moved a lot of the tags to categories.
If you’re trying to get to something that was once a tag, this is how you can get to the new category:
in the URL, switch out “/tag/” with “/cat/” and you should be able to hit up the new category and get to the right section you’re trying to get to.
I upgraded all the subsections I was using as tags into categories because that way I can actually keep track of what is actually being used as a category/subsection. If I forgot some, they’ll be converted eventually as well.