Manual domain verification request: achim1603.github.io (verification code is empty)

Hello Marketplace team,

I would like to request manual domain verification for our app “LUXAV Group Engine” (General app, user-managed, Meeting SDK), which I am submitting for publishing as unlisted.

Domain: achim1603.github.io

This is a GitHub Pages site that hosts our privacy policy, terms of use, support/guide pages and the OAuth redirect relay page:

https://achim1603.github.io/luxav-zoom/

Repository: GitHub - Achim1603/luxav-zoom · GitHub

When I choose “Upload an HTML file”, the verification dialog shows only “.html” as file name and https://achim1603.github.io/.html as target URL, and the downloaded file is empty (0 bytes). The " tag" method shows with an empty content value as well. It looks like no verification code is generated for this domain. A TXT record cannot be set for a github.io subdomain. Screenshots of both dialogs are attached.

Could you please verify the domain manually or let me know the steps? I can place any file or meta tag you provide on the GitHub Pages site.

Thank you,
Achim Bossert
LUXAV Audiovisuelle Kommunikation GmbH