Hi again Tessi. I've had a look at your site and having cut it down from 32 to 1 page I did publish it on my site and even then it was a slow upload.
I can confirm that I get the same "Does not have a <meta name="viewport"> tag with width or initial scale."
But I also then looked at my root website and I get the same error. I believe this is due to the way Xara uses the single web page content to serve up both the desktop & mobile site. I even tried adding the below to my root page but it still comes up with the same error, so Xara's code is overwriting this somewhere along the way.
<meta name="viewport" content="width=device-width, initial-scale=1.0">
As your site contains adult content I have asked a moderator to remove your link above so it's not downloaded unknowingly by someone who may be offended by such or to young to view it.

I think it will be a while before Xara can resolve this issue but I don't see it as a big problem, All of my sites work as expected on whatever device.
Egg