I'm Lucy, and I'd be happy to answer your questions today. I'm sorry to hear that this happened.
Your landlord cannot change the terms of a renewal lease after it's agreed to. That's the purpose of a lease - you're both bound by what it says for the agreed term. Any new terms and conditions imposed on November 5 are completely invalid because that's not part of the agreement you made. Terms agreed to in a lease via email should be enforceable, because email is a writing.
However, when you said that you agreed but asked about a different apartment - that doesn't create a new lease. The same is true if you say that you accept the renewal but want an 18 month lease. The acceptance of an offer must be a mirror image of the original terms. Saying, "I agree to this, but I want to live in this cheaper apartment" or "I agree but want to pay less" is actually a rejection of the renewal lease the landlord offered and an offer to create a new lease with different terms. Your landlord was free to reject that offer and propose their own new terms. From what you're saying here, no agreement was ever reached on the renewal.
An offer can be rescinded at any time before acceptance. If you and your landlord were emailing back and forth about the specific terms, the landlord actually does have a right to change their mind and take back the offer to renew. What that means is, in order to be allowed to stay, you'll need to be able to produce emails that show a contract was formed before your landlord tried to change the terms. If you can find that, any local tenant's rights organization may be able to help, or you could have a local attorney send a letter to the landlord on your behalf. But you need that offer and acceptance with the exact same terms first.
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