sometimes it does that, but it can be a possibility that you accidentally pressed a free trial. maybe the site is glitching, that has happened to me before. just let time pass and it might go away. if it doesn't and it bothers you, try contacting brainly support. you can also put two step verification on your account in case someone has haсked it.
someone has used an account open in your name. change your email passwords. log out on other devices other than what you have on you & get a 2 step identification so that this dose not happen again.
