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Inserts movie ratings from IMDb, RottenTomatoes and Metacritic ratings in any grid view with PLOT
< Feedback on trakt.tv grid++ IMDb, MetaCritic & RottenTomatoes movie ratings + links (PLOT VERSION)
try clearing your cache
I'm have tried both Userscripts & Tampermonkey extensions with Safari on macOS with your script, added the API key to the two locations where they need to be added. When I browse pages with many movies or tv shows I get errors written everywhere pointing to line 22 but that can't be the issue since on individual movie pages it shows the ratings.