Hi @Caterinahetz,
Welcome to the Sonos community. Thank you for reaching out to us and for letting us know about your concern. Let me share some information with you.
When a speaker is giving your green flashing light, it means the Sonos product is powered on and ready to be set up.
To help you connect to your Sonos system, allow me to ask a few questions.
- Was your Sonos speaker factory reset before?
- How many Sonos speakers do you have?
- Is your Sonos app software up-to-date?
- Are you using an iOS or Android device? Can you tell me the software version?
If you can, please provide more information about your Sonos system for us to check. Please let us know if you have any further questions or concerns, we'll be glad to assist you.