Will look into these issues tomorrow (today, but its like 3am so, erm, tomorrowish lol).
EDIT:
I really don't understand how it can work for some but not others.
It is very hard for me to figure out why it is happening also since I don't know how to recreate the problem.
2/10 downloads being sent is VERY strange because that is all on my auto's side.
I mean I don't implement hard-coded validation on downloads being sent so theres no reason for it to only send 2.
As for some not receiving submissions, the only way for me to debug that is to have you try it while im online. Then I can log the responses.