Arxiv rejection of preprints
As said in the comments, the situation seems to be different for each of your papers. The font problem is understandable, but it's hard to see what you mean by "personal and even economic questions". However, if you didn't answer the questions, it's not surprising that your paper was not published in arXiv. 

Concerning the essay, I quote from the FAQ, "arXiv accepts only submissions in the form of an article that would be refereeable by a conventional publication venue.", and in particular, " This excludes [...] papers that contain inflammatory or fictitious content, papers that use highly dramatic and mis-representative titles/abstracts/introductions". I'm in no position to scientifically judge the content of your essay, but at first glance, it seems quite provocative (assumptions that are not fundamental). 

If you believe that your essay is "refereeable by a conventional publication venue", then the moderation appeal is there for this. Although the moderators do not have to motivate their decision as a reviewer would do, by bringing sufficient support that your paper meets the criteria required by arXiv (in particular by demonstrating that it doesn't fit in any of the categories listed under "inappropriate format", the fact that other essays have been published in the past is not really relevant, you would have to show the quality of your content on its own). 

In general, arXiv moderators are human moderators, and it could be the case that the rejection of your paper was a mistake. However, keep in mind that publishing in arXiv is not a granted right, and that "arXiv reserves the right to reject or reclassify any submission".