QB Issue Resolution:

I don’t believe sub-accounts is the problem.  You have to use either an Invoice (for sales on credit) or a Sales Receipt (for cash sales) if you want to see the income on the P&L, dashboard or in sales reports. If you create income with a Bank Deposit, then it will show in a P&L only,  but not on the dashboard or in sales reports

Resolution for Issue 'Sales Report Doesn’t show Sub-Account sales' available: Yes (Solved).
Source: Intuit Community forum.

Sales Report Doesn’t show Sub-Account sales: 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.

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