I applied for ACA in 2024, but didn't use it. This year, got a notice to submit a f-8962 to the IRS for tax year 2024. I didn't get insurance nor a 1095-A. Any advice?

[NCperson]

contact ACA 800-318-2596 - if the IRS thinks you need to file form 8962, that means ACA told the IRS you had the insurance. 

[AmeliesUncle]

You said you "applied" for the health insurance but didn't "use" it.   Was your application accepted so that you HAD insurance?  If you 'had' the insurance (your application was accepted and you did not cancel it), it doesn't matter if you didn't actually use it  or not - you had the insurance.

If you had insurance (you applied and it was accepted), you an probably access your 1095-A on your online account for the Marketplace.