When you make your first purchase, you will be charged for your first box.  If you subscribe at the end of the month, your second box will be charged on the 1st, and it may seem that they are very close together.

If you pay up to the 25th, you pay for the current months box. From the 26th day (included), the payment corresponds to the next months box. 

It may also be that you have inadvertently subscribed with 2 different email addresses and have 2 active subscriptions. In this case, please email us to hello@vivadogs.com, and we will be happy to help you :-)