IRS Form 8453 for 2024 - wrong mailing address delaying receipt

Per your instructions and the mailing address on 2024 IRS Form 8453, I mailed form 8453 certified mail retrun recept requested and the supporting documents on 3/25/2024 which was the day after the IRS accepted my taxes.  The post office still has no updates when I check the tracking number.  The envelope has not been delivered and I have not received the return receipt.  It was mailed to Internal Revenue Service, Attn: Shipping and Receiving, 0254, Receipt and Control Branch, Austin, TX   73344-0254.   What is the problem.  I have seen comments that the address is wrong.  Hasn't the IRS put out a new address????  If the address is wrong it makes no sense to mail it again to the same address.