Hey, that's me who's sorry.. I haven't had any problems like yours so far, you're the first. Can you give me some more details by updating your comment maybe, about your version of FF for instance, other addons you might be using maybe? I'd be glad to help you if I can.

Edit : thanks for the update :) I'm quite new to FF addons development myself, and I've got no mechanism built into the addon to help users debug. I'll soon be able to add a "Enable debug mode" button there to give me more insights when there's an issue for someone. What's weird is that your item list must have been correctly loaded since you can see the items count. I've added a "disconnect from Pocket account" feature in my upcoming release, that removes some of the data stored by the addon and disconnect from your Pocket account. Maybe there has been corrupt data, and this might help... but since you've had the bug on a fresh install, I don't have really high hopes.

Edit #2 : there's also a bug fix in the upcoming version that might help. Don't hesitate to tell me if the bug still occures, and I'll be working on a debug mode as soon as I get a bit of free time.