Changes to my Patreon (Patreon)

I have decided to modify the payment method, and now I will charge in advance instead of at the end of the month, the reason is because there was a user that what he did was subscribe at the beginning of the month to have access to my content, and at the end of the month before they were charged , canceled the subscription, so it was free to see my Patreon, and I'm not willing to let that go one more time