I installed the plugin and when I call its options in the backend there are two empty tabs. Basic and Advanced.
Never came across this issue. Did you try with a fresh install of WordPress? There is probably an issue with another plugin… Don’t you have any warnings/errors? Did you check your PHP logs? There must be something.
I tried to upload an image, but in the upload folder there are just the usual image sizes.
It will not create the retina images automatically if the associated option is not checked. Do you have the retina dashboard? In there you can generate all the images or do it one by one.
There was something wrong with my firefox. (I noticed that wordpress complained about my “old browser”) After resetting everything, it worked. Thanks anyway.
