These troubleshooting tips might help you. You didn't mention which reader you have, so you'll have to decide which of these applies to yours.
https://squareup.com/help/us/en/article/5203-square-magstripe-reader-troubleshooting
https://squareup.com/help/us/en/article/5412-square-chip-card-reader-tips-and-troubleshooting
https://squareup.com/help/us/en/article/5673-square-contactless-and-chip-card-reader-troubleshooting
The most important tips are checking that you have a supported device and the newest software update.
If you're still unable to make the reader work after going through the appropriate troubleshooting steps and you received your reader within the last year, you can look into a warranty replacement. Square makes it pretty easy to do. https://squareup.com/help/us/en/article/5148-square-hardware-limited-warranty-and-returns
@VanKalkerFarms - Love the links! There is a ton of useful tips in our Support Center.
@Photog1 - It looks like you might be using one of our older readers. You can order a new one directly from your Dashboard. Just sign in here.
Tracy Lynn Fashion Jewery square readerMartha Rogers
@maroge - Welcome to the Seller Community! Would you mind sharing more details about what you need help with?
The power sourceto the reader is not working, I need a replacement power source?
Any micro usb cable will work. You can pick one up at a bestbuy, walmart or cell phone store.
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