I was redirected there too, when I checked it after reading your post. The footer said something to the effect of: All right reserved to AnyACG, 2010-2018. And the title was indeed MangaWindow (which I confess I've never heard of).
Someone on the Batoto discord (edit: a user, not anyone from the staff) had claimed that they had bought the domain (they were one of the people trying to write up a Batoto replacement). Not sure if it's the same person.
Seems like phishing site for me. Well, may it be or not, the site definitely just one of those scraper sites considering their quality.
I'm gonna stay with Mangadex on desktop and Mangalism on mobile for now.