Appeal deadline questions after an unemployment denial after 11 years as an electrician's helper

My claim was denied after 6 weeks of waiting, and the letter says I have a short window to appeal. I have been trying to stay organised about it. The letter lists a deadline and a hearing process, but it is hard to follow.

Thanks for writing this out. I went through something close to it 8 months ago, and it got easier once I kept a simple log of every call and form.