Hi, I'm not sure if this is still actively maintained, so apologies for the thread necromancy.
The
previous report got kind of lost in the performance debugging, but I wanted to note I'm also seeing that the identifiers template tag doesn't work.
I was hoping to get this working for ereaderIQ, which uses the Amazon ID in the URL. I tried {identifiers:select(amazon)} with no luck. If you just pass {identifiers} it appears to contain only the ISBN. I can successfully use this in the Book Details customization to get a working link, so it appears specific to this plugin.
Here's an example URL:
https://www.ereaderiq.com/dp/B0047Y0EWY/
Opening the configuration is also very very slow for me, but that's honestly a secondary issue.