May have already been posted, just reposting if so, it was something confusing I found when first becoming a trad (because it mentions sedevacantism and maybe some trad topics on the site):
ourladyisgod.com
https://web.archive.org/web/20180628060750/http://ourladyisgod.com/
V2 church has responded to this small group (but oddly seems pretty silent about sedevacantism, are there any official anti-sedevacantist statements?): https://udayton.edu/imri/mary/m/mary-is-god-catholic-movement-condemned.php