The old portal, although looked like 1980s, worked flawlessly and also had easier and faster format to file ITR. In the name of bringing fresh and modern look they made it crap. Also the e-filing is now much more complicated and time consuming. Already filed for a lot of customers but encountered lot of errors and bugs. Most of the buttons will be irresponsive. After clicking a button i have to wait for eternity for it to load.
That's why they say,
"don't fix things which isn't broken"