Hi there,
Be sure to have the matching 64bit A.N.A x64.vst and A.N.A x64.au if on MacOSX or A.N.A x64.dll if on WIN installed in your current plug-ins folder and not the A.N.A.xxx file which is matching the 32 bits version of the plug-in.
That's the correct way to be sure you've installed the 64bit version, also be sure using the latest 1.5 A.N.A version from your Account/Download area, might be obvious but you want to be sure that you're running the latest version and did not skipped an update.
Once sure of that, thank you for updating again if the issue is still happening since it could be a compatibility problem with Cubase 10 then, thanks 