When visiting the ISP, you can reset your IP for free, or, if you did that recently, pay money. The option to pay does not appear unless you have the specified amount of money in your accounts. If you have the specified amount or more, you can pay to reset your IP. This usually takes about 10 minutes (for me), unless you are running other processes, and during that time some things may happen to your money.
If you are charged before the process starts, this wouldn't be a problem. However if you are charged after the process ends, you might not have the needed amount of money.
Are you charged before or after the IP reset process runs?