When I install the Amazon Assistant extension from the Firefox store, I can't use the toolbar icon at all: there is a dropdown when I click the icon, but it's blank except for a spinning progress indicator.
When I install it from the Chrome store, the dropdown appears as expected, but I am unable to sign in. (When I click the toolbar icon and then click the "Sign In" button in the dropdown, a new tab opens with an Amazon sign-in page, but even after signing into the website, I am not signed in on the extension.) I note that, before the dropdown loads with the usual content, a message is displayed for a split second that reads "Cookies have been disabled in your browser."
I am using Orion 0.99.114.1.