Well, that's interesting, too. I went to each of those plugins' threads and downloaded the zip file from the first post. I opened a terminal window and ran "calibre-customize..." for each. The versions installed were the one's I already have installed. Both plugins appear to be saying they have updates available when they don't? Perhaps the update notification is for a beta build (posted near the end of the threads)?
What versions does Calibre say you have installed?
Code:
calibre-customize -a "Goodreads.zip" in pwsh at 13:23:41
Plugin added: Goodreads (1, 7, 3)
Dave Downloads calibre-customize -a "Quality Check.zip" in pwsh at 13:24:28
Plugin added: Quality Check (1, 13, 3)