FINAL FANTASY XIV Online: Loggin fail 3070 error (Workarounds)
Short answer
Suggested fix (unconfirmed): Verify your game files through Steam and restart your client. If the issue persists, restore your default game settings and log back in.
The problem
Just broght Evercold dlc and game F up... Thanks SE,
Suggested fix (unconfirmed): Ignore players using cosmetic mods and do not engage with them. Alternatively, disable third-party texturing tools to prevent custom client-side appearance modifications.
Suggested fix (unconfirmed): Report the guide to Steam support and direct your questions regarding plugin policy to Square Enix support. If you do not wish to use plugins, simply choose not to use them.