Connecting Zotero to koreader

I've been reading more academic papers of late in addition to online essays. And storing them in Zotero rather than Wallabag (where I save the online essays). Now I want to read them on my kobo. So trying to hook up Zotero in a similar-ish way to how Wallabag is hooked up.

Came across this: https://forums.zotero.org/discussion/90686/koreader

Which references this: https://github.com/stelzch/zotero.koplugin/

Following the instructions there:

• Connected my kobo to laptop and created a Zotero folder in its root.
• Copied storage and zotero.sqlite from my local Zotero folder to the folder on the Kobo.
• Make a folder on kobo: mkdir .adds/koreader/plugins/zotero.koplugin
• Download the files from https://github.com/stelzch/zotero.koplugin/ (I did it as a zip file) and copy them to the folder on the kobo.
• Eject the kobo, let koreader restart.
• Go to Search > Zotero > Settings and set the folder to the Zotero folder we copied the storage and sqlite to.
• Go to Search > Zotero > Browse database.
• Browse your PDFs!