Hello @alwaysshri
As you are aware the ITD went through a major overhaul with IT portal 2.0 with that third parties involved in the ecosystem need to update their systems. We will be releasing exciting features in mid-August.
In the meantime, you can prepare your return on Quicko and wait for the filing window to open, we will soon notify you once the ITR e-filing is enabled for FY20-21.
Due date for filing ITR is 30th Sept 2021 as mandated by the government.