It got weirder, it looks like the site currently uses the wrong certificate
Confirmed here.
This is LetsEncrypt certificate anyone can get for free, and that interactio.live domain was registered this year.
I don't remember what kind of certificate was used originally by Chipmixer, but this stinks more and more like some kind of attack, better to avoid using clearnet when it goes online.
Domain Name: interactio.live
Registry Domain ID: 384f8780e67a4ed7a58b0fa07a95927a-DONUTS
Registrar WHOIS Server: whois.registrar.amazon.com
Registrar URL: http://registrar.amazon.com
Updated Date: 2022-02-10T16:09:59Z
Creation Date: 2022-01-04T15:04:45Z
Registry Expiry Date: 2023-01-04T15:04:45Z
Registrar: Amazon Registrar, Inc.