If your Yeti PRO 4000 is experiencing performance issues, power it off and then on again. We also recommend checking the app to make sure you’ve downloaded the latest firmware update. If you continue to experience problems, contact our customer support team at www.goalzero.com/contact or call 1-888-794-6250. View the full troubleshooting guide: CLICK HERE: Yeti PRO 4000 Troubleshooting Guide
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