How to get any admin to work?

I have no idea what's going on, but any admin I try has just stopped working. And it's not like I just put in my username wrong because I can use other basic commands like :kill me or :tp me plr. The main one I need is the command :fly me and it won't work. Along with a couple other commands. Could someone get an admin and put my name in it or something? Because when I do it doesn't work. And the command works in studio when I'm named "Player". I even have this game called Obby For Admin which I made about a year ago and when I made it the admin worked perfectly fine. I haven't touched the game since then and when I went in recently it doesn't work. If you want you help I can send you a copy of an admin script I used via roblox.

Thanks for reading!