Denied unemployment, how do I appeal? - 14 months and counting

My claim was denied after 2 weeks of waiting, and the letter says I have a short window to appeal. 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. Did you bring documents or only talk?

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