That means the site was not live when they create the Ann? The Ann thread also unedited. So there is No possibility of inserting the link recently in that Ann thread. Anyway, though I am not a DT 
I have already tagged the user.
I have already tagged the user.This is very suspicious. They've create ann before, and bump today. By doing this, they has been trying to convince newbie that they have been online since 2018. Scammers want to easily scam people.
Everything is much simpler) This Scam was back in 2018. And this is confirmed in the web archive (19 Mar 2018): https://web.archive.org/web/20180319173052/https://btc2xreturn.com/ We know that any fraud doesn't last long. And it was also discontinued in 2018. And after 2 years, the scammers returned to the previous fraud and registered the same domain again. This domain has identical content as the one I specified in the archive.
In any case, those who promise to double bitcoin in 8 hours are scammers.
I left them a negative tag.
This is a well-planned scam. Please stay away from them.