When the streamer is showing a solid blue light this suggests that it is successfully connected to your Wi-Fi network. It retains these credentials even if powered off for a significant time. If a mobile or tablet device cannot see the streamer, these are the steps to try in order to resolve the issue:
1) Check that the mobile or tablet device is connected to the same Wi-Fi network as the one on which the streamer is set up.
2) Ensure that no VPN is enabled.
3) Ensure that you have the latest version of the Presto Music app installed.
4) Open the Presto Music app on your mobile or tablet device, go to 'settings' and then 'change'. The streamer should appear within 10-15 seconds.
5) If the streamer doesn't appear, kill the app and then re-open it and try stage 4 again.
6) If that still doesn't work, do a short single press on the button on the back of the streamer. The light on the front of the streamer will start flashing rapidly. Within 2-3 minutes it should show solid blue again. Once that has happened please close the app on your iOS or android device, then repeat stage 4 again.
7) If none of this works, please email info@prestomusic.com and describe what happens on stage 4 - i.e. is the streamer instantly not listed, or is there a 'finding devices' animation whilst it looks for it?