Unet CCU Exceeded by appID: Not going down

I've been working on a multiplayer FPS, and decided very early on I'd be using Unity Multiplayer due to the ease of setting it up. It's been working fine for about 6 months, but now all of a sudden it's throwing an error saying that the CCU is exceeded by my appID. To be honest, I'm a novice when it comes to networking in Unity, so I read up about this error. CCU means concurrent users or the amount of users on the server at one time. Though I am not sure, I assume that this number would be constantly changing. When I look in the dashboard though, it says that I am limited to 20 CCUs and that my project is using 24 CCUs. I could not find a way to lower the amount of CCUs online, as I tried closing all the game instances and reloading the page, but nothing seems to work. Is this error a bug on Unity's side or is there something I can do about this? Thanks in advance!