> Have not gone through all my old mail yet.

I'm a bit befuddled that you posted to Reddit rather than actually finding what you received from Voya.

If the plan was closed, it's entirely possible they sent you a check with the entire contents of the 401(k). In that case you had 60 days to roll it into another plan, such as an IRA. If you failed to do that, you may very well be out of luck and on the hook for the taxes.

But for goodness sake go open that paperwork and see precisely what they did.