Around 2019-2020, the parent company behind IKnowThatGirl (often linked to the infamous "GirlsDoPorn" legal fallout, though separate entities) faced intense pressure. Lawsuits regarding consent, revenge porn, and the identification of amateur models caused credit card processors to blacklist the domain.
Was this the kind of story you were thinking of? I can modify or expand on it if needed! iknowthatgirl full upd