I guess because [ExtrasButton] is not enabled (change Visible to 1). I think this was changed in 2037 or 2038. [ExtrasButton] is no longer needed for [WebsiteButton#] in newer versions.
So go and enable [ExtrasButton] and you will find Website button there (click extra button on autorun, then website appears).
Code:
[ExtrasButton]
------------------------------------------------------- Autorun\Extras.png \ ExtrasSelected.png \ ExtrasClicked.png
Left= // # pixels
Top= // # pixels
//Width= // # pixels
//Height= // # pixels
//AreaTop= // # pixels
//AreaLeft= // # pixels
//AreaWidth= // # pixels
//AreaHeight= // # pixels
//Font= // string
//FontColor= // $######
//FontColorOnMouse= // $######
//FontColorMouseDown= // $######
//FontColorDisabled= // $######
//FontSize= // # size
//FontSizeOnMouse= // # size
//FontBold= // 0, 1
//Alignment= // 0, 1
//LabelX= // # pixels
//LabelY= // # pixels
//Visible= // 0, 1
For tutorial, there is a
wiki, but some of the content is only for newer versions (2040+). Keep that in mind.