For the workouts that have challenges, it should display our last number so we know what out new goals are. Hard to keep track on paper.
"Watching" what you eat is far different than actually logging your intake. You really will open your eyes if you actually track the caloric intake. There is a significant amount of studies that show we underestimate our caloric intake substantially. There is also a growing science to suggest not only do we underestimate our intake, that effect is heightened when he exercise because he tend to consume more AND we tend to think we have "earned" the extra calories or that they wont have as much effect.
Given that you've been working out for over a year and a half, and you've actually put on 15 pounds (im assuming that it is 15 lbs of fat and not lean muscle, else you'd probably not be complaining) then the period of time is long enough to outrun any up and down fluctuations associated with day to day food digestion, water retention or your body just being your body. Therefore, ruling out the up and downs associated with interim body weight fluctuations, you are simply consuming too many calories. OR . . .
If a caloric surplus is not the reason why you are putting on weight, then you may have a medical reason, which you should have checked out. I suspect, from experience, that if you are gaining weight, working out, and then you go to a doctor, they will do tests but they will also ask you to log your food intake.
But the fact is, absent a medical condition, over the long run, and fully appreciating that not all calories are equal on a micronutrient level, the basic math of calories in, calories out governs our bodies.
Looking for a forum to share progress, frustrations, related complaining to have some accountability to help me stick this thing out.