Hello there,
Well, I must admit in advance that we are not actively testing the plugin on Nginx, so we do not officially support it. However, we are pretty confident that the plugin can work along with Nginx just as well as Apache, as long as the correct configuration is made.
Now, the issue has been discussed before in the support forum here: https://www.ads-software.com/support/topic/rules-for-nginx?replies=15 and it seems that the proper configuration should be something like:
location assets {
}
# THIS IS THE CACHE DIR INSIDE /wp-content
location cache/adaptive-images {
}
# THIS IS TH THE PHP SCRIPT INSIDE THE PLUGIN DIRECTORY
location / {
rewrite \.(?:jpe?g|gif|png)$ /adaptive-images-script.php;
}
I am sorry I cannot provide a definitively correct configuration for Nginx, but the code above is the general idea. You see in Apache the plugin is able to make direct changes to the .htaccess file. Perhaps the previous thread can provide some more information on how to handle this.
Please, do let us know how this works out for you, because Nginx is indeed one of our future priorities.
Cheers,
Takis