Do you have an Android or iPhone and did you get a new phone of the same type? If they were tied to your account on your previous phone (such as your google acc

Do you have an Android or iPhone and did you get a new phone of the same type? If they were tied to your account on your previous phone (such as your google account) it is possible your ex had set it up before and you never noticed and when you installed the app again your old settings were kept, which included all of the information your ex entered.