Unable to accept Terms and Conditions in iTunes Windows

Hello,

I'm trying to use the iTunes app, which I downloaded from the Microsoft Store. After logging in with my Apple ID, a message box appears, saying "This Apple ID has not yet been used with the iTunes Store. Please review your account information." So I click "Review", and a "Complete your Apple ID" page appears, where I would have to accept Terms and Conditions. I don't see a button or checkbox to accept them, which seems fine at first, because the page says "By clicking continue, you acknowledge that you agree to the ...". But then I click continue, and a message box appears, saying "You must agree to the ... to continue". I attached a screenshot.

Thank you for any help in advance!

Best regards,

Gábor