To get your Eufy Security Camera back online, start by ensuring that it's properly connected to power and Wi-Fi. Then, open the Eufy Security app and log in with your credentials. If the camera still isn't online, try power-cycling it by unplugging and plugging it back in. If the issue persists, check your Wi-Fi network and router settings, and consider contacting Eufy customer support for further assistance.
Eufy Security Camera Login