In order to find your Thinka on your local network, use your browser to go to https://setup.thinka.eu and fill in the serial number of your Thinka. We will then redirect you to your Thinka on your local network. If your Thinka is protected by a password, provide it, and you will be directed to the Settings page, where you can manage your Thinka via this web interface.
It may be handy to bookmark the web interface of your Thinka, so you do not need to go to the setup.thinka.eu site again.