Hi @ZheGin ,
For the wheel of fortune to appear on the page, you’ll need a table with the options on the same page.
Here is an example:
The main logic is from here:
https://bitbucket.org/atlassian/forge-wheel-of-fortune/src/456072e8e6a899eef92bd4bbda7b6d44731889f2/src/index.tsx#lines-90
Where we can see that the app requests the content of the page and then adds each row from the table as a wheel segment.
If there is no table on the page or no rows in the table, then there will be no segments to populate the wheel of fortune and therefore it will just show the black triangle:
Hope this helps (and yes, it could be clearer in the tutorial README).
Caterina