I'm on a free account what was I billed 9 dollars for?

I previously was paying services but I am now on a free account but… I just recently got billed 9.4 dollars… what was I billed for?? Plus I can’t find it in my billing history

https://dash.cloudflare.com/xxxxxxx/billing You can query the billing information,
https://dash.cloudflare.com/xxxxxxxxxx/billing/subscriptions Query subscription information, may be using other charging services.