Sammie thats not a good answer. Alot of us are having this problem. Why? I'm copying and pasting the license number from Unity and I'm having the same problem...wrong license.
I managed to find the solution myself. You need to remove the modules/boonex/chat/install directory. Worked for me atleast. Hope it works for everyone else too.
Anyone else can be more helpfull?
DoLaugh