Bad Manners and Brimstone

I think the letter is way too long and includes way too much information that the superintendent does not need to know and that does not paint you in a good light. It is not the superintendent or school district's fault or business whether you get unemployment or have other jobs. Stick to the terms of whatever contract you signed, and simply ask for clarification of those terms without getting into your bills and inability to pay rent and plans to build your online resources, for example.

I am not really following why you think your compensation will be affected by the coronavirus, and if I were the superintendent reading this letter I would not understand what you are asking and why.

Bold above is a strong point. No need to get into personal finances, etc.

(snip)
Unfortunately, I have bills to pay so I am forced to ask about this. I do worry that at some point in the near future I will be unable to pay my rent if there is no resolution shortly.
(snip)
It is my very strong desire to see this job through to the end of the school year and I have put everything that I can into making this school year as successful as possible for all of my students.

Unfortunately, we all have bills to pay. Sorry if that sounds a bit snarky, but That paragraph is an excellent example for what to omit.

Bold above is a good ending. The strike-out sounds a bit too "oh pity me. SOB" if that makes sense.

I'm not a writer but maybe something like "I take pride in my work ethic and have made this school year a success for all of my students."

Or maybe that paragraph shouldn't be included either. Maybe that, too, is cutting into personal information. I get the voting yourself up thought, but what you're actually doing is seeking information.