Airalo Used Up My 3 GB eSIM Data Overnight Without Any Usage or Explanation

Airalo e-sim gave me a warning that my 3 GB internet was finished even though I didn't use it overnight. I loaded it in the evening, and when I woke up in the morning it was finished. I definitely didn't use it. It’s really frustrating not knowing where the data went. Moreover, there is no screen that reports usage details. I checked if there was an application open in the background, but there is no such field. If this is a system error, it needs to be addressed immediately.