Reinstallation of Snips problem


Hi everybody,
I have a problem with Snips. I’ve tried to delete Snips from Ubuntu to reinstall and after deleted with “sudo apt-get remove --purge” and deleted manually all of the snips files inside the various folder and snips users. I can’t reinstall the platform and the service like a fresh installation. I’ve tried to reinstall copying the file .lists to download the dpkg, install with apt-get and tried to restore the services file. Now with Snips, I have the services started and the user created manually but it doesn’t receive the hotword. I have tried to reinstall the assistant from sam but it gives me error for the file and folder permissions. With sam test speaker, I can hear the sound coming from the laptop.
How can I restore or install a clean Snips like a fresh install?