Please help me, I can't find my precious account!

My user name: xk730, I have been unable to log in to him for a long time! Because I forgot my email; I tried various methods, including the API function of GitHub, but I couldn’t know what mailbox I used when I registered. Please help me, thank you! This account (xk730) is really important to me. I need to use it to invest in project development. I would appreciate it if you could help me

“login”: “xk730”,
“id”: 40309144,
“node_id”: “MDQ6VXNlcjQwMzA5MTQ0”,
“avatar_url”: “”,
“gravatar_id”: “”,
“url”: “”,
“html_url”: “xk730 · GitHub”,
“followers_url”: “”,
“following_url”: “{/other_user}”,
“gists_url”: “{/gist_id}”,
“starred_url”: “{/owner}{/repo}”,
“subscriptions_url”: “”,
“organizations_url”: “”,
“repos_url”: “”,
“events_url”: “{/privacy}”,
“received_events_url”: “”,
“type”: “User”,
“site_admin”: false,
“name”: null,
“company”: null,
“blog”: “”,
“location”: null,
“email”: null,
“hireable”: null,
“bio”: null,
“twitter_username”: null,
“public_repos”: 0,
“public_gists”: 0,
“followers”: 2,
“following”: 0,
“created_at”: “2018-06-16T01:24:07Z”,
“updated_at”: “2020-07-06T12:20:44Z”

Hi there @xk910 :wave: I’m sorry to hear that. Have you tried contacting our Support team? They are best able to assist in cases of account-specific issues like this.