My problem is that I only added this in post-ITA.
If you need copies of all the documents submitted with your application, what IRCC calls "the application, supporting documents and correspondences sent to and/or from IRCC" - in some cases it can take way longer than 30 days. In a few recent examples IRCC is seeking an extension of 1 year. Below is an email from IRCC with such an extension.
As indicated in your request, you are seeking documents relating to "the application, supporting documents and correspondences sent to and/or from IRCC", which are held by
offices outside of Canada. Due to ongoing concerns related to the spread of Coronavirus disease (COVID-19), preventative measures have been enacted throughout our global network of offices, which results in the inability to retrieve the records that you are seeking at this time.
Due to these circumstances, I wish to inform you that, in accordance with the Access To Information Act*,
an extension of 365 days beyond the statutory 30 day limit is necessary to process your request.