Hello there, @MaloriN.

Let me sort things out for you. You should have recorded the advance payment by creating a liability account. This is to track the amount of the retainers you receive from your customers. 

Since you have already made the transaction, you have two options to fix this. First, is to delete all transactions and record a retainer or deposit.

If you don't wish to delete any transactions, you can follow the second option. To do this, you can add those time/hours work to an invoice with a zero amount, for it does not generate an income.

In case you need to view Retained Earnings account details, feel free to check this article: How to view Retained Earnings account details.

Don't hesitate to write a comment below if you need further assistance. I'm more than happy to help. Have a great day.