If you have access to the e-mail address that was specified during registration, you can change the password yourself.
Done, the password has been successfully changed.
Data leaks are constantly happening on the Internet. Hackers gain access to the credentials of users of various services. If you use the same password on different sites and data has been leaked on one of them, then other accounts are at risk of hacking.
There are websites that help users check if their personal data has been stolen. For example, Firefox Monitor or HaveIBeenPwned. The HaveIBeenPwned service allows you to download a database of stolen passwords for comparison offline, so as not to enter your password on third-party sites.
It is urgently necessary to change it and in the future not to use the same passwords on different services. Come up with a secure and easy-to-remember password and protect your account in other ways.