Check your browser console (Command + Alt + J on Mac, or Control + Shift + J on Windows/Linux). If you see any errors, this could be caused by a conflict between Elegantt for Trello and other Chrome extensions.
In this case, you need to disable your other Chrome extensions.
If this error persists, could you try again and at the same time can you check your browser console (Command + Option + J on Mac or Ctrl + Shift + J on Windows / Linux)? And, could you give us a screenshot of your browser console that we'll transfer at our Technical Team.
Feel free to email us your questions and we'll be happy to answer :)
Please contact us at [email protected]