Locked out of my Roblox account (ben10h13) for years — Roblox support won't help, need advice

I've been locked out of my Roblox account, username ben10h13, for years due to 2-Step Verification. The email originally linked to the account was deleted a long time ago and is permanently gone — I confirmed with Google that it's unrecoverable ("email not found," well past any recovery window). I also don't have access to whatever phone number (if any) was on the account, since I've changed lines since then.

I still remember the account's password, and I have people who can verify my ownership of the account. I've also provided Roblox support with details like:

Robux purchases I made (spent on "emo" style outfits, sometime around 2018-2022)

A Superman outfit I own, which is currently displayed on the account's profile

Games I played most: Shindo Life, Reaper 2, Blox Fruits, Bloxburg, Arsenal (was around level 70+), and Jailbreak

Despite multiple appeals over several messages, Roblox support keeps repeating that they need to "verify ownership" but won't specify what additional information they actually need beyond what I've already given them. The ticket is now stuck in a loop of templated responses.

Has anyone dealt with this exact situation — no recovery email, no recovery phone, but password + purchase/item history? Did escalating through a different channel (like @AskRoblox on Twitter/X) actually work? Any advice on what finally got Roblox to do a manual review would help a lot.