So my question is , could I get evicted if I pay rent the 12th? And can my old landlord sell a house without notifying me in a decent amount of time?

My landlord sold the house and let me know that she officially sold it three days after sealing the deal and l had to get the contact information too my new Landlord to talk to her about the rent and I told her is it possible if I can pay at the end of the month or at least on the twelfth when I get paid she said no so she say she wants it by the seventh after the seventh there will be a extra $50 late fee
So my question is , could I get evicted if I pay rent the 12th? And can my old landlord sell a house without notifying me in a decent amount of time?
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