Hi and welcome to Arturia forums.
The new Arturia plug-ins only come as 64 bit plug-ins. Are you running the new plugin, and is your DAW running 64 bit?
If the above is okay, then:
Have you restarted your DAW?
Are you using VST2 or VST3 plugins?
Which paths is your DAW set to look for VSTs? Does those paths match the paths where your VSTs are installed? Have you checked, that your plug-ins are located on those paths?