Calorie intake

Hi guys
I'm Marilia and I'm 5'5' and 141lbs.
I'm on my second round of Focus t25 Gamma Phase, using 3 pound dumbells. I really love this workout and pair it with 45min to an hour of zumba a day, working out 5 to 6 days a week, depending on my schedule.
Currently MFP indicates that I should be eating 1710 calories in order to lose the 10 more pounds I want to lose but I'm only eating about 1200-1400 calories a day. I'm very meticulous about logging my meals, logging every ounce of food, drink and condiment and making sure that my macros are around 40-50% carbs, 20-30% fats and 20-30% protein, still I don't seem to be able to lose the weight.
Don't get me wrong, during the first round of Gamma I lost inches of my waist, tighs and arms and my stomach is definitely flatter, but the weight doesn't seem to come off.

My question is, I am not losing because I'm eating under my calorie budget or is this enough?
Thanks guys, I really need some enlightening on this subject!