If you’ve forgotten your Steam username and password, go here to try and find your account - https://help.steampowered.com/en/wizard/HelpWithAccount
If you are unable to complete the account recovery process, you will need to try and verify your ownership of the account here - https://help.steampowered.com/en/wizard/HelpWithAccount
Please bear in mind Sports Interactive and SEGA have no access to Steam accounts and password and cannot help in this situation. You must use Steam’s support in order to get support with this issue.
If you’ve forgotten your Epic username and password, go here to try and find your account - https://www.epicgames.com/help/en-US/epic-accounts-c74/account-security-c112/how-to-reset-your-epic-games-password-if-you-can-t-log-in-to-your-account-a3261
If you are unable to receive an email allowing you to do so, you will need to configure the email linked to the account as shown here - https://www.epicgames.com/help/en-US/epic-accounts-c74/general-support-c79/i-can-t-change-the-email-on-my-epic-games-account-a4313
Please bear in mind Sports Interactive and SEGA have no access to Epic accounts and password and cannot help in this situation. You must use Epic’s support in order to get support with this issue.
If you’ve forgotten your Steam username and password, go here to try and find your account: https://support.microsoft.com/en-us/account-billing/reset-a-forgotten-microsoft-account-password-eff4f067-5042-c1a3-fe72-b04d60556c37
Please bear in mind Sports Interactive and SEGA have no access to Windows accounts and password and cannot help in this situation. You must use Windows’ support in order to get support with this issue.
If you require more guidance about this issue, please submit a support ticket and our team will try and help you.