Sensors are inactive on the web

You need to check the following:

Browser compatibility

Currently Web uses the Sensor API - Gyroscope, but it is not compatible with some of the major browsers, such as Safari, Firefox.

For more information, see Browser compatibility.

Secure contexts

You should consider using HTTPS, browsers can only use sensors in secure contexts (relevant limitations).

You can refer to issue 22 to enable it, or enable it yourself using other methods.