Login Failed

Hi boys,
I'll go straight, i'm here because i need help.
Since the crossrealm, i cannot play with my draneï Resto shaman.

It says : "Login Failed" when i press enter to start playing it.

It got teleported to Dalaran like other chars with the merge.

I tried to log it on a different wow, with deleted CACHE and WTF and without addons.

Nothing happens, still "Login Failed"

Does anyone have an idea or a solution? :)

Ty

PS: SOLUTION IS TO DO A CHARACTER RECUSTOMIZATION
>It likely has one of the few 'invalid' customization options available within the WoD model client selected. Try adjusting your characters skin, face, hair etc to desirable alternatives then completing the change.