yes .. i am also getting the same.. try to use forgot password.. but dont change it.. only send otps.. and leave site..
and try logging in again..
its working..
I was having the same problem today. The solution is to delete the JSESSIONID cookie stored in browser by the income tax e-filing website.
You can do it in Firefox browser using the Cookies Manager+ add-on. After opening the login webpage, open the Cookies Manager from Firefox Tools menu, search for "incometax" in Cookies Manager+ and delete the JSESSIONID cookie.