another user was reporting a similar experience but probably not related: https://community.smartthings.com/t/devices-disappeared-from-ios-and-web-app-but-all-show-in-ide-april-2023/261579
do report the issue to ST support so they can investigate
another user was reporting a similar experience but probably not related: https://community.smartthings.com/t/devices-disappeared-from-ios-and-web-app-but-all-show-in-ide-april-2023/261579
do report the issue to ST support so they can investigate