In early 2022, we had the Superscape Max turf installed in our back yard. We notice a small section around the edge of the grass keeps "pooling" a small pile of sand (we think it's coming up from underneath the turf), and the turf looks to be "sinking" a little in the area (the area is about 4 inches by 4 inches). Do you know what is causing this? And, do you have suggestions for what we should do to fix this?