Xiaomi has an unreportable bug. The security app that monitors Internet data usage doesn't reset at the specified date selected for internet plans, as shown in the picture below which is the 5th day of this month. The bug is that it shows data usage for the other 4 days too, in the other words the feature of "usage reset date" doesn't work at all.
Worse is that i wanted to give feedback but the feedback app didn't have a section for it at all as if they don't accept it 🤷🏻♂️.
I will attach the screenshots and hope if somebody works for Xiaomi here to inform them about it.
In my case i have used only 5.45GB on the day of reset of my sim data plan but the app reads 178.1GB remaining from 200GB.
Edit: Xiaomi 13T Pro, Global Region, All the updates are up-to-date