V10 not enough disk space

Still Win 7 and my installed Waves V10 plugins work properly. Bought new plugins, wanted to make offline installation, but Waves Central is buggy and gives me the wrong message “not enough disk space”. Support wants to tell me something with my pc is wrong, but there is nothing wrong, my daw and plugins work perfectly, also my old Waves plugins and most new plugins still work on my machine and installation is easy, whereas Waves Central is not working. How can a simple installation be so complicated?

These new plugins, are thy compatible with Win 7??

Is Waves Central compatible with Win 7?? If not, that could be the issue. In which case, there might be a way to download the offline installers directly from their website.