Ksou

Hello, I am trying to log in after many months to the server and whenever I enter my credentials I get error "Access failed. Please try again later. ." I tried everything, but nothing helped. I reset my password, download clean version and replaced files, ran updater, downloaded ready version from the website. Nothing helped. New accounts can log in fine, but apparently my character still exists in the old account. Anyone has any idea what else can help?