There is nothing wrong that I can see, SaveTheOcean (STO) reports a bit differently where it doesn't immediately notify the wallet page that is has been found like the other cryptos do. It takes roughly 15-25 minutes to mature and report as found. At the moment I'm seeing around 26 blocks (3 of those being STO), so I assume that the last hour had a few more that are in the maturation process. Some hours are slow as we try to find higher difficulty blocks, some hours produce many small ones. It all varies on hashrate and what coins the pool is trying to find based on the profitability of that moment.