What’s your production platform ? Win or MacOS and are you using a 32bit or 64bit version of FL Studio 20 ( if on WIndows ), on MacOS it’s just available as 64bit Daw.
You have to make sure that you are using the Kick 2 plugin version matching your DAW specs, so either 32bit or 64bit but not both.
Also check in which folder FL as installed the plugin and if you don’t have more than once.
Since you’re using the 1.0.5 version, you should also try to upgrade to the latest v1.1.1, if you do so, please backup your v1.05 installer folder before upgrading. You won’t be able to download it from your account anymore ( well that will be possible but it will require to ask for a link to support ).
I highly suggest you to do a clean uninstall/reinstall when upgrading to KICK 2 v.1.1.1, back up any folder containing user presets. In case of installing v1.1.1 on the top of existing v1.05, be sure that the new plugin gets installed in the same directory as the 1.05, it needs to be overwritten. You will also need to reactivate the plugin after installing v1.1.1,
the license key file used in v1.05 is no longer needed.