the same happened to me, changed the pw and now the new pw is not accepted.
The support of jk seems to be dead, the contact form doesnt work since month, mails are not answered.
Is there any possiblity to restore the password? unfortunately I have changed my password, but now it doesn´t regcognize it anymore.
The support of jkbms.com is dead and my seller on alibaba is also helpless