It’s quite plausible to me that they simply never bothered to build something to handle this extreme edge case. And frankly, if I was in charge I would probably

It’s quite plausible to me that they simply never bothered to build something to handle this extreme edge case. And frankly, if I was in charge I would probably agree. The billing being slightly early seems like the only thing vimeo have done wrong here. Everything else is on the OP trying to game their system and screwing up. I don’t have much sympathy, to be honest.