If you performed the activity on the account, you will not need to worry! If you did not perform these activities, we recommend to take steps to ensure your account is secure:
Changing your password
This means that, should someone ever manage to get hold of your account information and try to log in to your account with it, they will be asked for this code as well and without access to your verification method, they won't be able to receive the code. We highly recommend enabling this option. Everything you need to know about the how to can be found in this FAQ.
You can check your account's login history on the Account Management Website in the tab Security Settings.
If you feel your email address has also been compromised, we recommend changing it.
If you need any further assistance don't hesitate to reach out to our customer support team!