need a little more information. you say it was an advance. what were the terms of the advance and when did you move. THIS MIGHT CHANGEE MY ANSWER. However, as of now, I'm of the opinion that it's taxable in 2019. Moving expenses have not been deductible since 1/1/2018. if you were to get a corrected W-2 for 2019, you would need to file an amended return. If you owe additional taxes, you will also owe penalties and interest from 4/15/2020.
I'm really surprised that the IRS won't help. What did they tell you?
your option is to use form 4852 (substitute W-2) to report correct amounts but the IRS wants you to first contact them so they can contact your employer to send you a corrected w-2. To be consistent you would have to amend 2019. This can no longer be done using Turbotax.
