Got IRS letter re apply to next year.

What is this letter about and why?  I got my federal refund for the right amount and this is the first time I ever applied some to next year $xxx.

 

This letter says thank you for your inquiry.  We show credit or payment of $xxx for the tax period ending Dec 31, 2024.  We have no record of receiving your tax return.  

They want another copy or to file a return now.  This is for 2024!  Should I ignore it?  Did Turbo Tax not designate the amount applying to 2024?  Should I call the IRS?  

Oh, is it because my husband died in 2023?  They sent the joint refund to my bank account ok.