When using the Blog Post Widget, I found that *.webp image file format is not working. After having changed my posts images to *jpg, everything works fine.
Due to the fact that I exclusively use the *webp image file format on my homepage, I would appreciate very much to have this image file format also implemented in the newsletter plugin.
I have the same problem. Just bought the plugin and it does not work on my website because I use only webp images.
The automated add-on generates jpg thumbnails in the upload folder but the newsletter preview points to the file with the webp extension, hence the image is not found.
Can you fix that asap please ?