To receive benefits if you resign or quit, it has to be for a good work connected reason. Based upon your description it does not appear you had a good work connected reason. The Director told you things were fine. Unfortunately you may have acted in haste. You have the right to appeal, but I don't think the result will be different unless you have more evidence. Good luck.
Unfortunately your choice to quit may have ruined your chance to get UC even though somehow you saw it as a better way to keep your record clean. Were the emails admitted into evidence at the original hearing? Those are the basis for your upset right? If they were not, I would try to get them into the record in the appeal even though the Court may not want to consider them. Seeking the advice of an attorney who does UC for a consult would be a good idea.
The answers given are limited to the facts as given and presumed by the answer itself. Without seeing actual written documentation or having a conference to more fully explore the issues, this short answer has only limited application. Make sure to seek legal counsel and provide all documentation to get assistance in making informed legal choices. Bstein@dcfsz.com, 305 377 1505