Look on your Computer in Folder C:\Users<YOUR LOGIN NAME>\AppData\Local\RetropieMetadataEditor and delete the folder and files you find there. The configuration you made will be gone. But a Button „Restore Default Configuration“ ist a good Idea. I will note it on the Change Request List.
I will make the Path Gamelist dynamically – like the Path Images already is. I guess, this will help the people which hold their gamelist on another path as the dafault location.
I really dont understand what you mean with „attracted mode“ and romlist. I never heared of it before, but Im also not so familar like with retroipie and stuff like the other people her. I jsut download and use it. Is there any documentation about this attracted mode and the romelist?