it's not free version (I paid)
when I found this problem at the first time, download button wasn't activated,
and the bar on the left of the button was blank, and I could find only 0 kb bar.
when I tried again later (in 10 min), it worked. (same address)
this problem have sometimes been.
now, it doesn't work at all.
what should I do?
Customer support service by UserEcho