I'm trying to add folder.png images without success. Do the images have to be a certain format or size or aspect ratio in order to work?
To use this feature, "Folder metadata display" has to be enabled in the advanced options and comics should be grouped by folder (not "flat").
Apart from the name ("folder.jpg" or png or gif), there is no restriction.
Thanks I was missing that advanced option. Now it's enabled it's working fine.
Customer support service by UserEcho