Error creating power BI account

I really want to learn more about PowerBI (as a Tableau fan so convince me!). So I tried to sign up at PowerBI service. Of couse I use me Microsoft account with wich I can logon at live.com and Azure. During suigning up, the powerBI portal recognizes my acount:

You have an account with us
You’re using [email protected] with another Microsoft service already. To finish signing up for Microsoft Power BI, sign in with your existing password.
 

But, when signing in for Power BI it repeats saying my username/password is incorrect (which is NOT true, howelse could I login to my Azure portal???) .

Enter password
Your email or password is incorrect. If you don't remember your password, reset it now.
 

When choosing resetting (although I really don't get  the point of resetting a password which is correct en I do know) I get:

We're sorry

You cannot reset your password at this time because your administrator has not configured password reset for your organization. There is no further action you can take to resolve this situation. Please contact your admin and ask them to configure password reset. To learn more about password reset configuration read the article Quick Start: Azure AD self-service password reset. 
 
Terribly annoying and dissapointing. Please help me te get started with PowerBI. 
 
Bernard van Raaij