1. configuration -> display - play -> Player Options general
if you need logo location, display it's comment at the side.
2. good, now i know what is the cause.
If you use smart mode or SD only, it should work.
If you use anything HQ, then it shouldn't.
thumbnail images will generate from highest quality converted files.
If your HQ file does not exists, it cannot be converted.
Switch "Quality available" to both, and goto "tester" tool to check the error.
likely your converter is not ready for HD, no h264 encoder.
3.
wiki.jvideodirect.com/w/Getting_Started_...t#System_Requirement
4. that is a reference only procedures, it may not work on some servers.
If you need our help to set this up, you can visit
jvideodirect.com/services