My website domain name expired but my site is still up and running. Why?

For over two weeks.

Where did u register the name ?

It might be that they forgot to 'remove' it or the expire date is wrong.

It would be best to contact them or just keep it like the way it is.

I forget how long it is but you get a grace period for renewal so that nobody snatches your domain name

If you want to keep it renew

if you don't renew and try to sell it

or just let it ride out

the company you bought it from will usualy give you a grace period to pay your bill and renew the domain. This is usually between 2-20 days.