I'm also tried this way, that's why asked
Mine link is: mysite.com//admin/layoutwidgets?edit=12
If you'd like to check I send the link
By the way, thanks for your patience
Welcome to the Q&A site for Question2Answer.
If you have a question about Q2A, please ask here, in English.
To report a bug, please create a new issue on Github or ask a question here with the bug tag.
If you just want to try Q2A, please use the demo site.