Main Question
If a user has been suspended from Stack Exchange as a whole and their rep has only been partially restored, and seemingly (from their end at least...) only on certain sites and not others, is this a normal thing and if not, what would be the appropriate waiting time before asking a question about it?
Supplementary
Is the decision regarding restored reputation made by individual Stack Exchange communities, or perhaps by the Stack Exchange community as a whole?
Are there particular levels of access enjoyed only by certain users or user-groups, or particular lines of appeal and escalation, particularly as in some circles Stack Exchange reputation may affect job prospects.