I am also having this issue.

Date & Time: 12/10/2021, 22:20 PM (CST)
Frequency: 1
World name: Diabolos
Character name: Irkalla Bint’uruk
Retainer name: N/A
NPC name: N/A
Monster name: N/A
Class/Level: Reaper/82
Party or solo: N/A
In-game time: N/A
Area and coordinates:N/A
Housing: N/A
Steps:
1. Used a Fantasia in-game
2. Removed all my gear, and logged out
3. Returned to the character selection screen
4. Unable to see any option to edit my character's data
5. Login screen only shows ??? for all character data