People can't use files from my server

Ok. First off thanks for reading this. So, I paid for a server about a month ago (got it from x factor servers) and it’s been running great but I have one problem. People can’t use stuff in my server unless they have the file also. for example people who have stacker can come in my server and use it all they want but people who don’t, don’t even see it on the tools list. This sucks because my admins can’t use my admin mod unless they download it also. Please Help!!!

Is script enforcer on?