You can log in here: https://registry.ilgateways.com/component/wsuser/login to renew your registry membership.
Once you log into your account there will be a message in the dashboard that states, "You are not a Registry member or your membership has expired. Please fill out the Registry Application before attempting to access the Dashboard". Please don't let that confuse you!
Underneath this message, you will see 5 steps and a red "Continue" button. This is the application, just go through each step and submit on step 5. It will have verify that your information is correct and have you update things if needed.