I'll ensure you can reconcile your journal transactions in QuickBooks Online (QBO).
In your case, it's possible that the date of the journal entries doesn't match the date range of reconciliation, which is why it's not showing up to be reconciled. With that, you'll need to review the date of the journal transactions if it's the same or within the reconciliation date. See this link for further guidance in reconciling an account in QuickBooks: Reconcile an account in QuickBooks Online.
Also, know that you can always reach out to your accountant if you need to make changes to your reconciliation or manage journal entries in QuickBooks.
I'm also attaching these helpful guides for managing reconciliations in the program: