Newly bought Windows 10 MC not working properly


New user
My kid bought MC but she can't log into any server, can't click "save to account" and can't click "sign in for free".
I tried a lot, I even thought of deleting login data but I am scared she won't be able to play at all after that.
She can play the game but she didn't spend all taht birthday money to play by herself.
What should I do?

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