Surebond Joint Stabilizing Sealer Worked

We got a new path put in our backyard leading from the patio to our pool house and we must have done something wrong. Our neighbor said that the product we used was bad, but I think we just applied it wrong. He also had a path put in recently, and he said he used Surebond joint stabilizing sealer and applied it almost the same way we did and that it worked fine. We used a generic brand that we got at a local store, but I am not sure if it was just the product. Surebond joint stabilizing sealer is supposed to be the best you can possibly get.