For some reason " oxide.unload VehicleLicense " is not working even on a fresh server with only Oxide and this plugin.
oxide.unload works for every other plugin.

What doesn't work about it? Are you sure the plugin is loaded at the time? Did you check your oxide/logs for errors?

Yes, I'm sure the plugin was loaded, no error in console when I tried to unload it. I just moved the .cs file to another folder to unload it.

I'm not sure why you'd have that issue, but it wouldn't be caused by a specific plugin.

I've just realised that the filename and permissions are Licence, not License.