Why? Why does the free edition owe you anything?
. "Personal Free: Ideal to get started"
A 3-note-limit is not "ideal" for anything.
It would be better advertised as a free trial (purely for evaluating otherwise paid-only service), rather than pretending they have a free plan.
I'm not saying 1000 notes is the answer. Maybe its 50, maybe its 500. But 3 certainly is limiting.
But I'm not going to bother trying it at "3 notes for free".