To authorize one or more IPs you need to log in to your account, go to the Proxy List page ( https://www.proxies.com/proxy ).  On this page you should search and/or select all of the proxies you wish to update.  If you wish to update all of the proxies on your account you do not need to select anything.

Now click on "Authentication" on the left and it will bring up the "IP Auth" settings on the right.  Enter your IPs in the IP list and click either "Update selected proxies" to update only the ones selected or "Update all proxies" to update all of the proxies in your account.

Two important things to note:

1. This is not instant.  It may take several minutes for your IP to be added.

2. We do not currently support authorizing IPv6 IPs.