When posting a journal the account I want to use is not showing on the drop down box?

Hello there, 

We are currently conducting an ongoing investigation into your concern. Our engineers know this matter and are working on a fix. If you haven't connected with our QuickBooks Online Support Team, I recommend doing so. This way, they can include you in the list of affected users.

To speak with one of our experts from QuickBooks Online Support. Please follow the steps below to contact support:

1. Sign in to your QuickBooks account.
2. Select the Help (?) icon.
3. Scroll down to select the Contact Us button and follow the prompts.
4. You will be able to request a callback or start a live chat with an expert.

Refer to this article for more details: How to get help with QuickBooks. 

Feel free to read this reference for future use: Customise reports in QuickBooks Online.

For additional QuickBooks-related concerns, don't hesitate to post them here in the Community. We're always available and willing to lend a hand to your queries. Have a great day ahead.