Command Blocks are not automatically enabled on your server and you have to turn them on.
Be careful, if someone changes their contents they may be able to get privileges on your server!
- Open the Filestab
- Search for a file labeled server.propertiesand click it to edit
- Search for enable-commands-blocks
- It will be set to falseby default, so change it totrue
- Restart your server. The command blocks will be enabled once done
