@Anonymouswrote:
The logical reason could well be so that you think it's not a scammer, which is exactly what it's made you think. I get what you're saying but maybe they want to keep the OP guessing for a while until they've used their information to do whatever it is they want to do.
But that is an assessment of my semi-informed assessment and reaction, in the context of all the information being presented at once.
The OP's reaction, when this started to drag on over the course of however long (and so was not succinctly summarised in a single post), was to start questioning the legitimacy of the source, and seek further information and help, which would be the natural reaction of anyone, not the other way around (i.e. persistance is not convincing, it's suspicion-arousing).
