Steam DLC Page: Assassin's Creed Revelations

I can see Assassin's Creed 1, 2, 3 Remastered, and so on WITHOUT BIRTHDATE VERIFICATION but I can't see Assassin's Creed Brotherhood and Assassin's Creed Revelations and NEED BIRTHDATE VERIFICATION. Why is

The Lost Archive, Assassin's Creed Wiki

Play Assassin's Creed games for free until August 14th, 2023

Assassin's Creed® Revelations on Steam

Assassin's Creed: Revelations - PCGamingWiki PCGW - bugs, fixes, crashes, mods, guides and improvements for every PC game

Assassin's Creed Mirage getting Ezio Auditore DLC

Ishak Pasha's Memoir Pages - Assassin's Creed: Revelations Guide - IGN

Steam Community :: Assassin's Creed III Remastered

AC Revelations Gold Edition Unlocker at Assassin's Creed: Revelations Nexus - Mods and community

Assassin's Creed Revelations Ishak Pasha's Memoir Pages Locations Guide