I do understand he's busy with some issues but i feel like it should have been disclaimed at the beginning. Since it was like instant and fast replies to start, and now that i paid and the script isn't working i haven't seen the guy online on skype at all and maybe 1 sentence reply / day or every other day.
IMO this behavior is unacceptable after someone bought the script. I would be lost and the script would be worthless.