What is a "usage period"?

A usage period is a monthly period that starts on the day when you create an account and resets/ends on the same day each subsequent month. For example, if you create an account on the 10th of January, your first usage period runs from the 10th of January to the 9th of February, and the second usage period runs from the 10th of February to the 9th of March, and so on.

If you upgrade your account to a paid plan, the day of the month that your account renews becomes the day that your usage period resets. For example, if you create an account on the 10th of January and you upgrade your account on the 20th of January, your usage period now runs from the 20th of January to the 19th of February, and your second usage period will run from the 20th of February to the 19th of March. If your account downgrades automatically, you will retain this usage period until you upgrade again.