are you using the _Array command? (or Array-> Rectangular if using the menus)
i can use that command to array in the Y axis only.
the problem with your description is the command has quite a few prompts- most of which allow the opportunity to push ‘done’… when, exactly, are you pushing done? (as in- you’ll have to type each step you do and what happens after that etc… or maybe upload a little video showing it… sometimes easier to do that instead of typing out each step)
in the meantime, if you’re wanting to only array on the Y axis, you might try ArrayLinear because it’s a simpler/faster dialog if going in one direction as opposed to 3.