Power bi Service log in issue

I have attached the screen shot shows I am free power bi serve user and if wish then upgrade to Pro user. as well as when I go setting in power bi service I dont see any admin configuration so I can assign roles which are only possible for Pro and premium per user account. But my question is they said try free power bi service Pro or premium per user but on there web page then when I click i am still as a simple free user. cant by upgrade why

https://powerbi.microsoft.com/en-us/pricing/