Send to Kindle Plugin (Chrome) isn't working :
on click, it brings the login popup (rendering is not quite right), second popup to authorize, and another page not found opens after login. Inspector of that window shows the following:
405 error with a commented code in a popup:
<!-- To discuss automated access to Amazon data please contact api-services-support@amazon.com. For information about migrating to our APIs refer to our Marketplace APIs at https://developer.amazonservices.com/ref=rm_5_sv, or our Product Advertising API at https://affiliate-program.amazon.com/gp/advertising/api/detail/main.html/ref=rm_5_ac for advertising use cases. -->
Plugin does work on iPadOS, but not MacOS
!


Login appears to work fine without these errors on iPadOS/iOS.
0.99.135.0.1-beta
Sequoia (15)