Qwant saves your settings in the “LocalStorage“, which is only accessible through your browser. If your browser blocks the use of the local storage, or if you wish to find your settings on different devices, you can use the settings saving URL. In the settings, you will find a customized URL that you will need to copy and paste. It summarizes all the options you have configured. Memorize this URL to access Qwant, and you will find the service that you like.