I uploaded the 'jquery-lightbox-for-native-galleries' plugin with Trasmit but after the transfer

the file doesn't show up in the list of plugins in WP.

I also tried to delete it (with Trasmit), since it doesn't show up in the Plugins list, but I am not able to — I tried many times but for some reason it doesn't want to delete the jquery-lightbox' file.

I didn't have any problems with the other plugins of Minimal WP Theme — only with jquery-lightbox.