The last update almost fixed it! Now the extension actually works! However, it won't let me log in using Google Authentication, so I'm stuck using the free version of the extension. I can hit log in, and enter my Google Authentication information, but when I return to the page to use the extension I'm not logged in. I've tried reloading, compatibility mode tweaks, etc. So this is progress, because at least some functionality is there now!
Again, I recognize this is a fringe extension not necessarily warranting your time--the browser is growing so fast! I love it! But I mention because maybe there are other Chrome extensions out there relying on Google Authentication which also struggle with this currently? Keep up the great work! Love the browser and love Kagi!