In the past, TER required that Profiles be named with a TS, as in "TS Mary" or "TS Sasha" (pre-op or post-op) or that the Profile data be marked appropriately: "Transexual - Yes (preop OR postop)." There was also a requirement (official? unofficial?) that ads (TER and non-TER ads) clearly state such status.  Providers who refused to comply and presented themselves as genetic XX were banned from TER. At least in the past.  
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My position is that it can be a matter of safety to be clear and up front about such things. Some guys go berserk and attack the Provider (US Army serviceman in Philippines murdered TS "date" a few years ago. Tried and convicted by the US Army and will return to the US soon.). Some guys feel so bad about being duped that they harm themselves. (Guys who have been victimized by Nigerian 419 scammers have committed suicide.)

Well, I saw another review and I know that personally I would like to know.

https://www.theeroticreview.com/reviews/malanna-8572109699-357816

This one is a post op, who no longer advertises as one.