Defective Return - Rectification of defective return after due date

I had filed my return and then received a notice for Defective Return. I missed that notice as it went to my spam folder and missed the date of reply. I don't even know what is the actual defect as it was not stated in their message. Anyways, I logged a Grievance on the portal requesting the department to allow me to fix the defect and refile it. I got the following reply from them. "Dear Taxpayer, It is seen from CPC portal for AY 2022-23 ,the return filed by you was identified under defective rules as per section 139(9) of Income Tax Act. Communication with regard to rectifying the defect was sent to your registered email id. However, it is seen that there is no response to the communication sent and your return will be taken up for further processing. The same will be done in batches based on various automated validations and risk parameter analysis. Also certain claims made by you in the return will be validated on system driven environment. CPC will send intimation to your registered email id once the processing gets completed." What does this means? Will the department process it on its own or will I get the opportunity to fix it? Please help!