WD Unlocker won't open since updating OS to Big Sur

I’ve just tried to access my newest external Passport drive purchased about 6 months ago and on trying to open the Unlocker software it won’t. It seems to try but the laptop fans start running hard as its clearly trying to process the command. I tried one of my older passport drives and that was telling me I need a separate CD in combo but it never had a CD with it and was also working fine prior to the Big Sur OS install. I was using the previous OS.

SPlease help


Please refer to the following KBA article: WD Unlocker and Mac OS 10.15 (Catalina)