Appeal deadline questions after an unemployment denial

My claim was denied after 19 weeks of waiting, and the letter says I have a short window to appeal. I worked as an accounts payable clerk before this. My employer's version of events does not match mine, and I have emails that show it. If you have appealed before, what helped you prepare?

Legal aid offices and some workforce centres help with unemployment hearings at no cost. A call is worth 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.