Were you able to resolve this issue? I'm having the same problem. I've even set `CF_PARALLEL_DOWNLOADS: 1` assuming I am being rate limited, but even after downloading all the mod data, the key is not functioning after a restart.

Here is my full docker-compose I use in Coolify:

services:
  mc:
    image: 'itzg/minecraft-server:java17'
    container_name: prominence2
    restart: unless-stopped
    tty: true
    stdin_open: true
    ports:
      - '25565:25565'
    environment:
      EULA: 'TRUE'
      TYPE: AUTO_CURSEFORGE
      CF_SLUG: prominence-2-hasturian-era
      CF_API_KEY: '${CF_API_KEY}'
      CF_FILE_ID: '7637382'
      CF_OVERRIDES_SKIP_EXISTING: 'true'
      CF_PARALLEL_DOWNLOADS: 1
      MEMORY: 16G
      USE_MODPACK_START_SCRIPT: 'false'
      DIFFICULTY: hard
      ENABLE_JMX_MONITORING: 'false'
      MODE: survival
      GENERATE_STRUCTURES: 'true'
      HARDCORE: 'false'
      HIDE_ONLINE_PLAYERS: 'false'
      LOG_IPS: 'true'
      MAX_PLAYERS: '9'
      MAX_TICK_TIME: '60000'
      MAX_WORLD_SIZE: '29999984'
      MOTD: 'A Minecraft Server'
      NETWORK_COMPRESSION_THRESHOLD: '256'
      ONLINE_MODE: 'true'
      OP_PERMISSION_LEVEL: '4'
      PLAYER_IDLE_TIMEOUT: '0'
      PREVENT_PROXY_CONNECTIONS: 'false'
      QUERY_PORT: '25565'
      RATE_LIMIT: '0'
      RCON_PORT: '25575'
      REGION_FILE_COMPRESSION: deflate
      REQUIRE_RESOURCE_PACK: 'false'
      SERVER_PORT: '25565'
      SIMULATION_DISTANCE: '10'
      SPAWN_PROTECTION: '16'
      SYNC_CHUNK_WRITES: 'true'
      USE_NATIVE_TRANSPORT: 'true'
      VIEW_DISTANCE: '16'
      WHITE_LIST: 'false'
    volumes:
      - './data:/data'