We have been dealing in this kind of notice for demand very frequently. This issue may arise because of non filing of Form 10IE or incorrect date entered of filed Form 10IE which is mandatory to be filed before filing of ITR 3 to opt for the new tax regime.
In case you need a personalized tax advisory on resolving the above issue, you can book a MEET using the below link, where one of our team tax expert shall analyze the issue and suggest you the solution further.
Could you please share us your contact details on help@quicko.com so our support team can connect and help you further?
Also, there is no error on part of Quicko. The issue might be because of non filing of form 10IE but we assure you the best possible help from our end since you filed taxes through us.