I would like to use the Trello LTI but the page keeps displaing
I have had a play with this and can confirm I am seeing the same behaviour, I even had a try of the app preview on Edu App Center, and it seems to exhibit the same behaviour.
It seems to be a community submitted app, however, I cannot find any contact details, I will see what information I can pull up and let you know.
I have had a look around in the forums and found the following post that might be of use Trello LTI. It seems you need to make the Trello Board public. Have you given this a go?
Also, it provides some good tips on getting the URL of your board. Please have a look and let me know how you go!
Hope that helps!
Yes the board is public, I can fetch trough the API the information...
Retrieving data ...