We had to make some changes to the way bundles are handled in the latest update. The simplest way to get your download links it to add the product to your cart and order it again. Because you already own it, the price should come out to $0. Just click on links below for the plugin you are missing to add it to your cart.
The number you get from a 3rd party store is not a serial number, it's a coupon to get your plugin at no cost. All you have to do is enter that code on this page, and it will put the plugin into your cart and bring the cost down to $0. This way you will always have access to the latest version from your account here.
Windows: Open the installer, but make sure you open it as administrator. To do this, right click on the installer icon and choose "Run as Administrator."

Mac: Download and run the registration fix below. After running this fix, you will have to register one last time, but it should stick.
If you are using OSX High Sierra (10.13 or greater) there is an issue where you have to reboot your computer after installing the plugin in order for it to show up in Logic Pro X. We are still looking for a solution to this problem, but rebooting should fix it.