401k to IRA Rollover Question

Hello, I was previously employed with a company and grew my 401k to a current balance of $34,000 ($30,000 vested).

I left the job 3 years ago, and I am just getting around to rolling the 401k into an IRA, but fidelity is showing that I only have $12,900 to roll over.

I am pretty new to this stuff and am not sure why I don’t have the entire 401k amount ($34,000) to roll over.

Thanks!