I'm a bit in a weird situation.
I've referred a friend and made him an account and used the sim but he preferred to use an other email. So I created an other account but now the sim is locked. I already deactivated the other account.
The deactivation can take some time to be completed.
You should wait or contact the support to see if they can unlock it or buy a new SIM :( and reused it the SIM when full inactivated.
contact the support I think