To edit your settings, you should open the Power-Up panel from Trello and look for enabled Power-Ups. In the list, find the Troglio one and click on the gear icon to make appear the popup menu. In this menu you should see Edit your settings. then click on it.
There you go: a popup should appear with your settings you can review and edit.
If you want to remove your data, just click the Delete button of this same popup.
Finally, remind that we also keep an access token as part of our authorization workflow so in order to remove all data, each user should also click on the Remove personal data from the gear icon menu.