PLEASE HELP !!!!!!

Hi guys so I bought rekordbox last month paying a monthly fee. this month the payment has came from my account but rekordbox isn't showing up licenced, so I signed out of the programme and tried to sign back in and now its giving me a error message saying that the licence key I'm using is being used on other computers and I must deactivate it from the other computers then activate it on the laptop again but I have only ever used it on my laptop. Can someone help please