Hi there, @riju.
Thank you for posting here in the Community. I can provide some information about how to file the state forms.
Since you can no longer file them in QuickBooks, you'll need to send the forms through the state website. Each state has its own instructions for late filings, so I recommend reaching out to them for more details.
Also, you can use the following articles to ensure compliance with state payroll tax regulations:
Fill me in if you have additional questions about filing forms in QBO. I'm always here to help. Take care always.