This morning I received an email from vercel which says I got 75% of free tier. And I login to vercel dashboard later and see a project which seldom used received about 300k traffic from "google bot" in the past day.
and I go to "usage" and see very high usage of all sorts of services in July 15th:

This is truly not what I want. So I deleted one of these projects and I had enabled attack challenge mode but seems there is no remission for that...what should I do?