GivvyEpstein is software you install. It is independent of Whatnot and does not guarantee entry, a win, or that an account stays in good standing.
You supply the accounts, devices, proxies and third-party service keys. You are responsible for what the fleet does on your behalf.
Access is per seat and per engine. Sharing a token, running two agents on one account, or reselling access is not included unless a plan says so.