just installed your plugin on https://madtrash.com/community/ and it doesn't seem to work. I can attach 1 or more images. After uploading them I don't see the generated thumbnail, I see just the title. After I have selected the images with the checkboxes and press insert I'll get the error message, that I have to select the images by using the checkboxes. Ive checked the respective upload directory and no image files are there. I thought it was a problem with the chmod option, but changing this doesn't improve anything.
The console of Chrome inspection tool doesn't return any errors. Only if I try to delete the (obvisiously not) uploaded picture.
Can you please help.