When I am trying to use the kite login url to generate request token instead of generating the request token it is directly going to kite home page/dashboard. I have ensured all my kite sessions in mobile and laptop are logged out.
Please check if you are using a redirect URL as kite.zerodha.com, if you are using then change the redirect to your own site or redirect to https://kite.trade
https://kite.trade/connect/login?api_key=****************