Level 14 Deep Blue Cave 3 star issue

I am using an iPhone 12 Mini (version iOS 15.2.1
App version is 2.1.6

So recently, I was trying to get a 3 star score in Deep Blue Cave level 14 but what i noticed that my score was 133k and still get 2 star. I was trying to complete the goal: Get 18 stars in Deep Blue Cave. I tried and tried until i still get 2 star. I dont know why, i think it is because of huge 3 star buff which makes it impossible to get 3 stars. So What should I do with the thing?