I've got an advert appearing every time I go to Mumsnet active conversations, which is rendering the site completely unusable - if I am on the iPad, none of the links are clickable if this ad appears, and if I am on the MacBook, same thing (plus it crashes safari). I am writing this from my phone, as no ads appear when I go straight to 'active conversations' so it's the only method I have for posting.
It's a YouTube video which auto plays for something called 'Trendtation' (might be a middle eastern company as that's where I live) and it's definitely that specific advert which is causing the issue.