GOAL CHANGES WITH WEIGHT LOSS?!

ok so when i lost 10 lbs the site said "you have significant loss do you want to change your goals" or something like that i just put no ask me again when i lose another 10 lbs for any of you that have put yes and changed it in what ways does it change? is it less calories because the weight loss will slow down or is it more calories cuz u lost weight? how do they change the goals?