I want to cancel my subscription free trial VPN plz help

Yeah I’m using macOS. This does not work because when I log into my brave account all it says is “complete your purchase to begin using brace VPN”. I never got an email with my premium account invoice number so I cannot contact technical support. Do I need to complete the purchase before I can cancel it or something? At this point I don’t mind just paying the $10 and then cancelling it I just cannot have the recurring payments because I’m not using the vpn at all. Thanks for the help