As per details on NabBot website:
There were 4 NabBot's given in contests1
As per Tibia Wiki also:
For contributing to the fansite:
The Contests are not so often- once per year.
Tibia Expert contestSeptember 13, 2022
Idea discussion: TibiaQA supporter accountsSeptember 11, 2022
New role discussion: ExpertsMay 22, 2022