QB Issue Resolution:

You can still get a copy of your Schedule C report as long as you have access. You can also run the Mileage log report.

However, we only secure your data for a year after the cancellation. If it’s past the one year mark, the system deletes all the data associated with your account.

If you forgot your user ID or password, just click on the Forgot your user ID or password link. An email will be sent to help you reset the login credentials.

Resolution for Issue 'Can I get copies of schedule C from my old account I closed?' available: Yes (Solved).
Source: Intuit Community forum.

Can I get copies of schedule C from my old account I closed?: this issue or error code is a known issue in Quickbooks Online (QBO) and/or Quickbooks. Support for this issue is available either by self-service or paid support options. Experts are available to resolve your Quickbooks issue to ensure minimal downtime and continue running your business. First try to resolve the issue yourself by looking for a resolution described below. If it is a complex issue or you are unable to solve the issue, you may contact us by clicking here or by using other support options.

Support for C report
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Error Recovery for C report [Canada]
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