You can only install Thea on all your devices if you've been invited. To install it on your PC (Mac or Windows), follow these steps:

1. Log in to nicequest.com, log in to your Account and go to the Thea section.
2. In the PC section, click "Install" and follow the steps to set up Thea.
3. Once the setup has finished, the status of your device will be "In process” in the Thea section of your Account. If you set up Thea correctly, it will appear as “Active” within 24 hours.