Links various membership platforms to Kemono and Coomer.
I can't reproduce this – are there any errors in the console? Could you link the creators you tried this script with?
Keep in mind that the window only shows up if the Patreon artist exists on Kemono. For example, the window shows up here, but not here, because the latter creator does not have a Kemono page. (This behavior also applies to the other sites.)
It doesn't work on the Patreon page