Let's start by making sure that your QuickBooks software is updated to the latest version. This ensures that the program displays the latest features and resolve issues such as missing adjusting journal entries tick box. I can guide you in doing so.
Go to the Employees menu.
Choose to Get Payroll Updates.
Tick the Download Entire Update checkbox.
Hit Download Latest Update.
A window appears when the download is complete.
Once completed, make sure to restart QuickBooks to ensure that all components are updated. Now, you can try adjusting your journal entries.
If the issue persists, running the Verify and Rebuild tool to isolate this unexpected behavior. This is a built-in tool that auto-detects and auto-fix data damage issues within QuickBooks.
Open your QuickBooks company file.
Choose the File menu.
Click Verify Data.
Pick OK when you see the message QuickBooks detected no problem with your data. You may continue using your company file.