If you have already received a response on the Subreddit, please refer to that response. If you believe you are the rightful owner of the account and have the correct required information, you will need to submit an account recovery request using the Help option on the login page in-game.
If your request is denied again due to insufficient data, your options are to submit another account recovery request in-game or create a new account to continue playing. Please understand that we unfortunately may not be able to help you with this any further through the community.