Resolved! Thank you, everyone for going way out of your way to help me. In the future, I'll be more precious with my scratch codes. But I'm also unlikely to enable 2FA for my WP account going forward anyway.

Here's the challenge:

I have posted requests on my en.wikipedia.org page (https://en.wikipedia.org/wiki/User:GoldRingChip) to indicate who I am. I have access to my Watchlist token, but I doubt that will help. What else can I do to prove I'm legit? Obviously, I want to keep this account secure. I've been a WP user for twelve years and I'm an Admin, so I really don't want to have to start over.

In T172878#3513097, @Bawolff wrote:

Codes dont get sent to your device, they are generated by an app on your device

How's Wikimania going? :)

Yes, I’ve tried. But the problem is that I can’t use TFA and it needs to work to disable it. I have a Token, a Secret Key, and 4 scratch codes. All the scratch codes have been used, and the TFA process doesn’t send a new code to my device.