u/80belowZero

I used FreeTaxUSA for my tax prep. I have a Robinhood account and a Phantom account. I uploaded the consolidated 1099 from Robinhood and a consolidated 8949 from my Phantom account.

Neither of these documents included all of my individual transactions as they were consolidated documents.

My return was accepted but I was never prompted to submit Form 8453 by FreeTaxUSA. I asked their support about it and they told me I didn't need to submit it even though my attached documents don't have all of my individual transactions.

Is that advice correct or do I need to send Form 8453 and my supporting transactions?