Appeal deadline questions after an unemployment denial - 2 months and counting

I got a denial letter last week saying I left my job voluntarily, but I was let go as a store manager. I have been trying to stay organised about it. 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.