Hello
Thanks for your answer but i don't have too much knowledge on database editing.
I have 3 countries with ids 9, 247 and 248 and i want to keep only the id 9
I am going to PREFIX_address table and click on edit (or edit inside) link and then type inside these?
UPDATE ps_address SET id_country = 9 WHERE id_country = 247
UPDATE ps_address SET id_country = 9 WHERE id_country = 248
Thanks