What happened to my old account?

Dear community,
Along with wishing you all an amazing day, I’d like to bring to your attention something, I recall having an account for more than 5 years with the email I registered this new account. What happened in the way? When did it get erased and why? If you need any evidence of me ever having an account, I have old reports that I generated as a means of testing the application’s functionality, back in 2013 or 2012, not exactly sure, but sometime then.

If this has already been replied to, I’m deeply sorry for not searching further.

Thanks in advance for your kind attention