Hi, thanks for the plugin, I use it on all my sites and usually have no issues.
I activated it on a multisite network and it doesn’t seem to work though. The webp files are generated, but the original png is still used in the front:
The reports we receive very often do not concern a problem with the plugin operation, but problems with understanding how the plugin works. Below I have attached the tutorial describing how to test the plugin: https://mattplugins.com/docs/how-to-test-converter-for-media-plugin
To be able to look at your website, I need its URL.