Really sorry to hear about this, @BogShack! You may have already gotten in touch with our Support team since posting this. If not, that would be my first piece of advice. They'll be able to guide you through the troubleshooting steps.
You can start by running through these troubleshooting steps - for your Square app, and for your reader (magstripe or contactless/chip). If that doesn't get you where you need to be, our Support team can help when you call in to give them more information about your cash drawer and printer.
Valentina
Community Moderator, Square
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