I've got some info on what might the cause of this unexpected behavior and show you the steps on how to fix it.
Before we proceed, let me ask you a few questions so we can trace the cause of this issue.
From what area in your QuickBooks account are you trying to view this invoice? Is it on the Invoices list under the Sales menu? Or is it in any invoice-related reports from the Reports section?
If you're trying to view it from the Invoices list, you can filter its Date to This month. This will show the invoices that you've made from January 01, 2021, to the latest date. Here's how:
Go to the Sales menu and select Invoices.
Filter the Date to This month, then set the Status to All.
If you're looking for it in your reports, you can customise the report's period according to the date when you created the transaction.