If you sign up for a monthly recurring charge, it was actually charge every month on the day you signed up, except in the instances where the date doesn't apply.  For instance, if you signed on on the 31st, and there isn't a 31st in the next month, it will fall on the last day of the month.

If you would like to change your scheduled recurring date, please follow the steps in this article.  

Still need help, reach out here help@purecharity.com.