Markdown requirements, Tiki flavored, Github flavored and additional options... (confused)
That looks odd - some questions:
- Do you have wysiwyg enabled? And it is the default?
- If so then there are probably some javascript errors in the js console.
- I presume composer installed everything ok? No errors there?
- What happens when you edit an old tiki markup page?
- What happens if you set tiki as the default and create a new page?