The dashboard is off because the server has no ADMIN_KEY. It is the one setting that stays in the environment — everything else can move here once it is set.

Add ADMIN_KEY=<a long random string> to the compose environment: block, or to your .env, recreate the container, and reload this page.

Already in your .env (or your stack manager's env file) and still seeing this? Compose only uses that file to fill in ${…} in the compose file. It reaches the container only if the service has env_file: .env, or passes the key through as - ADMIN_KEY=${ADMIN_KEY} under environment:.

Don't reuse ACCESS_KEY: it travels in every poster URL your clients hold.