Appeal deadline questions after an unemployment denial - 13 months and counting

My claim was denied after 13 weeks of waiting, and the letter says I have a short window to appeal. I am in Providence, in case local advice matters. My employer's version of events does not match mine, and I have emails that show it.

File the appeal before the deadline, even if you are unsure. You can gather documents afterwards. That is the one part I would not wait on.