Hello how are you?
Thanks for commenting and helping me.
Well, this was what I had to do to update the mod: stop the server, delete the folder I had created for the mod Server Tools, download the latest version, unzip it and re-create the folder on the server and insert the files. After all this let the server run again and the mod is now with the latest version and with the new options but the servertoolsconfig.xml appears to me with version 3.1, this has me confused. Sorry for the inconvenience.