This article refers to any plan purchased before 18th March 2022. You can reach out to firstname.lastname@example.org for more details.
For plans purchased after that, please refer to this article instead.
To check the day when your weekly limits reset, just open your Account settings -> Limits & usage section:
Here you will get info on:
your next billing date;
usage reset date for weekly limits;
usage reset date for monthly limits.