This is such a big issue and I can't believe they're allowed to advertise something as 'woman only' when it's obviously not. It's fraudulent, it's deception.
Even if you personally believe 'woman' relates to gender not sex, it's obvious that a large majority of the population uses a sex-based definition (the only definition until 5 minutes ago) so it should be a responsibility of the business to make it clear what they mean e.g. 'woman only' (by this we mean anyone with a gender identity of 'woman', not female only) or something.
If they don't do that, they're exposing women to what they may consider sexual assault.