Are you not catching, or pokemons are not spawning? Two different things. If they are spawning and the bot is not catching, then there is problem with the bot or your setting. If they are not spawning, that's on Niantic's side, they control the spawn rate; where, when, how, and what. We are the customer, Niantic is the provider, and PF's developed API is the bridge for the pokemons to cross. The bridge is either broke or fixed, and I think it is fixed for now.