Once an expired Domain Registration has been renewed, how long does it take for the services to begin working again?
Assuming that the domain DNS and hosts are still in place, the domain will begin working within 48 hours of its renewal. We put the domain back into the root immediately, the delay is caused by propagation out from the root.
In most cases - it will begin working almost immediately.
You can reboot your computer, clear your web browser cache, and try the domain with another browser to test if it has fully propagated yet.