My Id is ID7555 and api key is wrbywn1qbqwexzzz. I have been able to login for last 2 years. suddenly this morning I see this error on https://api.kite.trade/session/token api.
You were able to get a valid request token? Can you enable debug logs and see what is the complete error json? The one you have posted is a partial one.
Your Kite Connect app seems fine.