A few small notes about plugin

Hi, I have tried out your plugin. These are just a few notes about that I noticed. Hopefully it is a good feedback so you can improve the plugin ??

1. Try not to pollute main navigation. You only have one page in admin and that can easily be placed under Settings or Tools.
2. When opening up the plugin page I first see an error that there is no API key, and a second later everything is fine. This isn’t a big deal but it just looks awkward and unprofessional.
3. Quota for only 10 posts seems small, especially since this counts for post updates as well that can be tiny like fixing a typo. Plus, this can be ok for a small website, but what about big websites where multiple editors are working daily? If the problem is on your servers, maybe set something like auto publish new posts and updates every few hours? I am not sure how much Bing would need time to index new pages or updates without this plugin.