When upgrading, downgrading or using a free trial a free period can be applied to your account. During this period your account will not be charged.
The number of captures and the amount of the scrape allowance will be made proportional to the number of free days in the free period.
So for a Entry package with 5000 screenshots and seven free days, the number of captures is calculated as 5000/30.5 x 7. Giving an allowance of 1148 captures for the seven day trial period.
Once the trial period is finished the account is renewed as normal when the free period expires.