Spanish states and ñ letter

Hi,
We have a spanish client, and when we do a reservation in state's dropmenu we have some problem with the "ñ" letter (Spain have on state name A Coruña). So we went into de Booking's "dashboard" and then into "states" button to modify or to see whats happen.
After that we have this error. (see attachment).

Clues to solve this, please!!

Best regards!

Hi

I am sorry. It seems there is something wrong here. Could you please submit a support ticket sending us super admin account of your site so that I can check to see what's wrong and get it corrected for you?

Regards,

Tuan