Are you using the Weather Station application shipped with the device?
The weather station app is non-connectable. If you’re interested in configuring RuuviTag for a custom website, please try out the Eddystone demo available at https://ruu.vi/setup/.
Please note that the Eddystone demo is not yet properly power optimized, and will use up the battery in a month or so. We are planning to update the firmware with proper power optimization later in January, please follow the Eddystone Thread to receive notification when update is available.