It's unfortunate that your expectations were not met and/or the anticipated results were not made clear by your surgeon. You can end up with a small vertical incision between the belly button and the lower horizontal incision if you do not have enough skin that can be removed between the original belly button and the lower abdominal incision. Most surgeons will discuss this with you preoperatively, as another option is to "float" (or disconnect) the belly button stack and reattach it lower to avoid that vertical scar (that you called the "crack").
As far as feeling bloated up high under the breasts, that is probably due to the muscle plication or tightening that was done during the abdominoplasty. I cannot tell from your description, but if you are having an outward bulge, that is likely above the area that was tightened, so when you bloat its the easiest area to bulge. If the bulging is felt inside and not seen outwardly, it is a result from the amount of tightening that you had, which decreases the amount of room your intestines have to expand. If you are having problems now I would discuss them with your surgeon. In a situation such as this I also think it would be a good idea to find a board certified plastic surgeon for a second opinion. It is helpful if you obtain the operative reports from your surgeon to take with you to that visit. Best of luck!