When a domain expires due to non-payment, it needs to be manually renewed/restored:
Go to the“My Websites” page;
On the right side of the expired domain, click on “Renew” or "Restore";
Select desired "Billing Cycle" and "Payment Method";
Click “Buy now” to complete the process.
Once the domain renewal/restoration payment is received, it will be renewed/restored automatically.
The domain may need a few hours to be publicly accessible due to DNS propagation.