ReFX has officially discontinued Nexus 2. The current versions (Nexus 3 and Nexus 4) are native 64-bit plugins. If you own a legitimate license, your best "link" is the reFX Cloud app , which automatically installs the correct 64-bit VST/AU versions for your system. How to Get Nexus 2 Working in a 64-bit DAW
: reFX officially introduced native 64-bit support with version 2.3.2. refx nexus 2 dll 64 bit link
If you’re looking for legitimate information about Refx Nexus 2 (now known as or older versions) for 64-bit systems, here’s a safe and accurate feature: ReFX has officially discontinued Nexus 2