Can I renew my domain name after it expires?

Yes, but it also depends upon your domain name's extension and it's registry rules.

If the registry for your domain name extension allows it, we hold your expired domain name for a few days waiting for you to renew it.
For many domain name extensions (such as .com, .net, and .org) there is a grace period allowing you to renew the domain name after expiration with a small late fee ($18.50).

If you wait to long the domain is released and available for someone else to buy. So we advise not to let the date for renewal pass and pay on time!

So to avoid this please renew your domain name on time and avoid any service (website or email) interruptions.