when does the Fast Data Transfer limit reset (if it even does) and what happens if it ends (and does my website still work)
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when does the Fast Data Transfer limit reset (if it even does) and what happens if it ends (and does my website still work)
You should be able to see your billing cycle reset date on the main page of your dashboard
As you approach your limits you will get emails and notifications alerting you of how close you are.
There's more info here if you want to read more https://vercel.com/docs/limits/fair-use-guidelines