image cache reset at weserv

@douglaskarr, I believe I reached out previously about the images no longer showing as thumbnails in the feed — you pointed me to Weserv as the free image resource the plugin is using, and the fact that (as a free resource) the thumbnail images were too large (the client was uploading PNG files instead of JPEGs!!). I have teamed up with the client to replace all of those massive PNGs that were gumming up the free image service’s quotas, but cannot seem to “flush” that cached image contents — any idea how I could do that? Possibly delete & reinstall the plugin to have it regenerate those thumbs? Any advice you can relay is greatly appreciated.
-Steve C.
3Cstudio

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