From the moment you receive your username and password, you will have access to the digital learning environment at leren.icm.nl. Your account does not expire.
It may take a few minutes before you receive an email. And check your spam box, the mail might have ended up there. If it’s not there either, check whether you have entered the correct email address. Perhaps your ICM-account is registered under a previous email address.
You can change your password under the profile settings on your homepage.