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Date & Time: 05/12/2021
World name: Kujata
Character name: Shizuku Tachibana
Class/Level: AST - 85
Party or solo: Solo
Area and coordinates: Radz-at-Han / Thavnair ( 32.4 , 8.2 )

Steps:
1. Complete the Main Scenario Quest "Skies Aflame" and get teleported to Radz-at-Han.
2. Do the Questline up to "The Blasphemy Unmasked" and get Graha Tia to follow you.
3. Teleport out of the city to another Aetheryte.
4. There is no way to enter the city again. Entering from the entrance at Thavnair returns a "You are unable to leave this area" error and brings you back to the gate.

Please help, there doesn't seem to be any other method of entering the city as the Aetheryte is only unlocked after this quest.