Thank you very much for your reminder！The credit card number has been deleted.
The original price was $3.75, and the payment input field on the system had a default value of $6.00. I tried to change it by using Ctrl + A to select all and then typed 3.75.
Unfortunately, it seems that the system does not recognize Ctrl + A, and it also automatically shifts the decimal point, so what I entered was interpreted as 6003.75$ instead of 3.75$.