Hi @Vandylyn thanks for reaching out and welcome to the Seller Community!
Sorry to hear you've been having trouble with your Square Reader.
For context here, the lights on top of the Square Reader will indicate the charge available on the reader, not the connection status. Three green dots mean the battery on your reader is 75% charged. See here for a breakdown of what the different lights mean on your Square Reader.
If you've been unable to pair your reader through the Square Point of Sale app, we recommend trying these troubleshooting steps that have resolved this same issue for others. Firstly, we recommend ensuring your device is compatible with Square.
Once you've confirmed your device is compatible, follow the below steps.
1. Check if the app needs to be updated (if updates are needed, install and then reopen the app, if not close the app for now).
2. Check for software updates on your device and install them.
3. Reset your reader by pressing and holding the button on the side until you see four red lights flashing, then release the button. Set it aside.
4. Forget the reader from your Bluetooth devices list.
5. Open your Square app and navigate to More > Settings > Hardware > Card Readers.
6. If you see a reader listed on this page already, select it, and then select Forget This Reader. If you don't see a reader, continue to the next step.
7. Select Connect a Reader and follow the prompts on the screen.
8. If you still can't connect, try toggling your internet and Bluetooth off and then on again, and try again.
It's helpful to keep a reference of our troubleshooting steps in the event you're unable to pair your reader.
Let us know how you go after trying the above. Hopefully, this resolves the issue moving forward.
Laurie
Community Moderator, Australia, Square
Sign in and click Mark as Best Answer if my reply answers your question.
