Due to the sudden rise in the covid, the deliver systems and transport have some disturbances which can a leading cause about the delay of your document. I would recommend you to wait for 5 more official days and if its still not received contact ICAI through there helpdesk number/email ID.

For the ICAI contact details, you can visit the link below:

https://www.icai.org/post/contact-us

To know more about CA, visit the link below:

https://www.careers360.com/careers/chartered-accountant

I hope this answer helps. All the very best for your future endeavors!