Do you have a TLD for your website?
Yes
Is your OpenVSX namespace verified?
Yes
Yes
Yes
Thanks for the request, and nice theme!
To verify a publisher we need a public website on your own domain (a GitHub repo or readme does not count for this step). That website needs to link to your Open VSX listing, and the homepage field on the Open VSX listing needs to point back to that website.
Right now the listing’s homepage points to your GitHub repo, and the website field in your post is the Open VSX link itself.
Once you have a site set up with the link and have updated the homepage on Open VSX, reply here and we will take another look.