You need to make a new auction for the name if you didn't extend it in time. You can extend .chain names from Base æpp or Wællet browser extension.https://forum.aeternity.com/t/how-to-extend-a-name-within-the-base-aepp-wallet/5832/7
I don't go to the grocery store to ask what is wrong with my foot, sure they can answer a medical question, but doctors are not at the grocery store. And AE developers hang out in the forums, not on this chat. Please kindly refer your question to the forum.