You, my friend, have a lot to catch up on.
Old “legacy” plan means the good old pricing you’ve been using so far. With new updated requests pricing for Sonnet 4, since the discount is over. Now it’s 2 requests.
You still won’t see the amount of requests you’ve spend for each request, but you do have a counter.
As for the new plan, I’d suggest to start with the blog announcement, then the new docs chapter on rate limits, then a few of popular threads here on the forum.