automatic update to 6.4

For some reason the slider is using the thumbnail size of the images, like this: https://www.richardbudddesign.co.uk/wp-content/uploads/2022/08/NBGin-NBDistillery_boxes_richardbudddesign-uai-258×182.jpg

I don’t know why.  You can try upgrading to 6.4.1 which came out today, or use this plugin to revert to the last version where it worked: https://www.ads-software.com/plugins/wp-downgrade/